True or false? Stars generate their energy through nuclear fission, the breaking apart of unstable heavy elements into lighter ones.

Show that the product of two rational numbers is a rational number.

Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination. Use a graphing calculator to check your answer. $\ \ a+\ \ b-\ \ c=7$, $\ \ a-\ \ b+\ \ c=5$, $3 a+\ \ b-\ \ c=-1$

Solve the inequality. Check your solution.

$$-a + 6 \leq 5$$

(a) Use the rational zero test to find any rational zeros of the polynomial $f(\boldsymbol{x})$.

(b) Write the complete factored form of $f(x)$.

$$f(x)=x^3-7 x+6$$

Prepare entries for the item listed below using two methods. First, prepare the entries without making a reversing entry. Second, prepare the entries with the use of a reversing entry. Use T-accounts to assist your analysis.

(c) On January 3, 20-2, payroll of $840 is paid, which includes the$280 of wages earned but not paid in December.

Solve the equation. Then show all steps.

$$-6 p+36=12$$

Write a brief definition for the following term, using the language of the cardiovascular system.

sternum: $\rule{10cm}{0.15mm}$

A starts at x = 0 and runs with a velocity of +3.0 m/s toward runner B. Runner B starts at the same time at x = 20 m and runs with a velocity of -2.0 m/s toward runner A. Where do they meet, and how much time has elapsed since they started running? (A) t = 3.0 s and x = 9.0 m (B) t = 3.0 s and x = 12 m (C) t = 4.0 s and x = 9.0 m (D) t = 4.0 s and x = 12 m

Consider the unadjusted trial balance of Royal, Inc., at December 31, 2020, and the related month-end adjustment data.

$$\begin{array}{c} \textbf{Royal, Inc.}\\ \textbf{Trial Balance Worksheet}\\ \textbf{December 31, 2020}\\ \end{array}$$

$$\begin{array}{l} \hspace{175pt}\textbf{Trial Balance \hspace{10pt} Adjustments \hspace{10pt}Adjusted Trial Balance}\\ \end{array}$$

$$\begin{array}{lrrrrrr} \textbf{Account} & \textbf{Debit} & \textbf{Credit} & \textbf{Debit} & \textbf{Credit} & \textbf{Debit} & \textbf{Credit}\\ \\ \text{Cash} &9,400\\ \text{Accounts receivable} &1,900\\ \text{Prepaid rent} &3,300\\ \text{Supplies} &2,600\\ \text{Furniture} &72,000\\ \text{Accumulated depreciation—furniture} && 3,100\\ \text{Accounts payable} &&3,400\\ \text{Salary payable}\\ \text{Common stock} && 12,000\\ \text{Retained earnings} &&58,620\\ \text{Dividends} &4,200\\ \text{Service revenue} &&19,300\\ \text{Salary expense} &2,500\\ \text{Rent expense}\\ \text{Utilities expense} &520\\ \text{Depreciation expense—furniture}\\ \text{Supplies expense}\\ \hline \text{Total} & \underline{\underline{96,420}} & \underline{\underline{96,420}}\\ \end{array}$$

Adjustment data at December 31, 2020, include the following:

a. Accrued service revenue at December 31, $3,850.

b. Prepaid rent expired during the month. The unadjusted prepaid balance of$3,300 relates to the period December 1, 2020, through February 28, 2021.

c. Supplies used during December, $2,120.

d. Depreciation on furniture for the month. The furniture’s expected useful life is five years.

e. Accrued salary expense at December 31 for Monday, Tuesday, and Wednesday. The five-day weekly payroll is$14,000 and will be paid on Friday.

Requirement

Prepare the single-step income statement, the statement of retained earnings, and the classified balance sheet. Draw arrows linking the three statements.

Graph the function given below.
f(x) =

$$\begin{cases} -x, if x > 2\\ x - 4, if x \leq 2 \end{cases}$$

Match the absolute value equation or inequality in the left column with an equivalent statement from the right column.

$$|3 x-1|<-5$$

A. $-5 \leq 3 x-1 \leq 5$

B. $3 x-1=x$ or $3 x-1=-x$

C. $3 x-1=5$ or $3 x-1=-5$

D. $\varnothing$

E. $3 x-1 \leq-5$ or $3 x-1 \geq 5$

F. $(-\infty, \infty)$

Use your graphing calculator to convert the complex number to trigonometric form in the following problems.

$$-11+2 i$$

Simplify:

$$\frac{2-2 i}{3-5 i}$$