You heart beats about 72 times per minute. At that rate, how many times will it beat in one hour? (Write an equation and solve the problem.)

Most cars are rated for fuel efficiency by estimating miles per gallon in city driving (c) and miles per gallon in highway driving (h). The Environmental Protection Agency uses the formula $r=\frac{1}{0.55 / c+0.45 / h}$ as its overall rating of gas usage. Think of h as the variable and c as a constant, and show that $\frac{d r}{d h}>0$. Explain why the results must be true if the EPA’s combined formula is a reasonable way to average the ratings c and h.To get some sense of howthe formulaworks, take c=20 and graph r as a function of h. Comment on why the EPA might want to use a function whose graph flattens out as this one does.

Fill in each blank so that the resulting statement is true. When each group’s population is divided by the modified divisor, a modified ____ for that group is obtained. These numbers are rounded down to the nearest whole number using ____ method, rounded up to the nearest whole number using ____ method, and rounded to the nearest whole number using ____ method.

Use the Distributive Property to multiply. (4-t)(-7)

For the given functions f and g, find the following. $\left(\frac{f}{g}\right)(1);f(x)=\sqrt{x-1}; g(x)=\sqrt{4-x}$

Find each missing number. Check your work. 8w = 480

use the vectors u = ⟨-4, 2⟩ and v = ⟨5, 1⟩ to find the indicated quantity. State whether the result is a vector or a scalar. 2u · u

What words and phrases does the author use in the first paragraph to produce an ironic tone?

Give the opposite of each number. If a number has no reciprocal, say so. 0

How can the question be answered using the words in parenthesis? ¿De qué se trata esta escena? (el atraco de un banco)

Distinguish between the axial and appendicular skeletons.

Find the midrange for each group of data items. 100, 40, 70, 40, 60

Graph the number on the number line: 4.

Use the Root Test to determine if each series converges absolutely or diverges.

$$\sum _ { n = 2 } ^ { \infty } \frac { ( - 1 ) ^ { n } } { n ^ { 1 + n } }$$