Sarah kept track of the total number of books she read. Sarah's graph shows that after 1 week she read a
total of 2 books. After 2 weeks she had read a total of 4
books.
After which week had Sarah read a total of 9 books?

A:8
B:10
C:5
D:6

Which set represents the range of the function shown? {(8, 2), (6, 5), (4, 7), (11, −2)} {−2, 2, 5, 7} {4, 6, 8, 11} {(2, 8), (5, 6), (7, 4), (−2, 11)} {−2, 2, 4, 5, 6, 7, 8, 11}

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)