Some people are guessing the number of jelly beans in a jar. Each person who guesses within 15 of the correct number will win a prize. The correct number of jelly beans is 389. What values of n represent the numbers that will win a prize? F. n = 389 or n = 404, G. n = 389 and n = 404, H. 389 ≤ n ≤ 404, I. 374 ≤ n ≤ 404

To win a math game, Lamar has to pick a card with an expression that has a value greater than 1. The card Lamar chooses reads $(\frac{1}{2})^{-4}$. Does Lamar win the game? Explain.

Confirm by multiplication that x is an eigen-vector of A, and find the corresponding eigen value. A = [2 -1 -1, -1 2 -1, -1 -1 2]; x = [1 1 1]

The Arctic Sea ice extent, the area of the sea covered by ice, grows seasonally over the winter months each year, typically from November to March, and is modeled by G(t), in millions of square kilometers, t months after November 1, 2014. (a) What is the sign of G'(t) for 0 < t < 4? (b) Suppose G''(t) < 0 for 0 < t < 4. What does this tell us about how the Arctic Sea ice extent grows? (c) Sketch a graph of G(t) for $0 \leq t \leq 4,$ given that G(0) = 10.3, G(4) = 14.4, and G'' is as in part (b). Label your axes, including units.

Solve the absolute value equation.

$$|15 x-5|=|35-5 x|$$

Simplify. Use a graphing calculator to check the result. -6(x - 3) + 5x

The vectors $\mathbf { u }$ and $\mathbf { v}$ are given. Calculate the dot product $\mathbf { u } \cdot \mathbf { v }$. $\mathbf { u } = \langle 4,5 , - 6 \rangle$, $\mathbf { v } = \langle 0 , - 2 , - 3 \rangle$

Solve the system of linear equations using the substitution method.

$$\left. \begin{array} { l } { x + y + z = 4 } \\ { 5 x + 5 y + 5 z = 12 } \\ { x - 4 y + z = 9 } \end{array} \right.$$

Choose the correct letter. A teacher knows that 80% of her students will score no more than 5 points above or below the class average, 85%, on the test. Which inequality represents the test scores of 80% of her students? A. 75 < A < 85 B. 85 ≤ A ≤ 90 C. 80 < A < 90 D. 80 ≤ A ≤ 90

Find the percent of decrease if the original population was 800 and the new population is 716.

Explain what is wrong with the statement. The function $P(x)=x^{2} e^{x}$ is a cumulative distribution function.

find the indicated term of the sequence. an = 4n / 2n^2 - 3, a11 = ?

Choose the correct letter. What are the solutions of 3d - 4 < -10 or 2d + 7 ≥ 9? A. d > - 2 B. d ≤ 1 C. -2 < d ≤ 1 D. d < -2 or d ≥ 1

Solve each equation. $x-4\dfrac{1}{2}=6\dfrac{3}{4}$