Answer:
Option A. f−1(x) = The quantity of seven x minus five, over three
Step-by-step explanation:
we know that
The given function is equal to
Let
step 1
Exchange the variables x for y and y for x
step 2
Isolate the variable y
x= 623/7 x =89 89 pages every night
A week has 7 days
She reads 623 pages in one week(623 in 7 days)
D. 13
x = 5
2 x 5 + 3 = 13
5 + 8 = 13
meaning the side length has to be 13, also.
(x+2,y+4)...........