Juan is a software salesperson. His base salary is $2300 and he makes 70$ more for every copy of History is Fun he sells. His total pay, P (in dollars), after selling copies is c given by the following. P=2300 + 70c
(a) What is Juan's total pay if he sells 22 copies?
(b) If Juan's total pay is $4610, how many copies did he sell?

(a) $3840   (b) 33 copies

Explanation:

Note: Here P refers to total money earned, c refers to copies sold.

(a)

using the given equation:

P = 2300 + 70c

P = 2300 + 70(22)

P = 2300 + 1540

P = 3840

Juan's total pay is $3840 if he sells 22 copies.

(b)

2300 + 70c = 4610

70c = 4610 - 2300

70c = 2310

c = 33

He sold 33 copies to earn total $4610.

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.