Question

The number of children that attend the county pool during the month of July can be represented by the function p(x)=64x+21, where x represents the number of days the pool was open that month.
The number of adults that attend the county pool during the month of July can be represented by the function q(x)=38+71x, where x represents the number of days the pool was open that month.

Which function, r(x), represents the total number of children and adults that went to the county pool during the month of July?


r(x)=135x+59

r(x)=7x+17

r(x)=92x+102

r(x)=102x+92

Answer 1

Answer:

r(x) = 135x  + 59

The first choice

Step-by-step explanation:

We have the number of children represented by p(x) = 64x + 21

the number of adults represented by q(x) = 38 + 71x

for x = number of days that the pool was opened during July.

function r(x) is suppose to represent the total number of children AND adults.

so  r(x) =  p(x) + q(x)

r(x) = (64x +21)  +  (38 + 71x)

r(x) = 64x + 71x + 21 + 38

r(x) = 135x  + 59