Pls answer and explain

D is the answer

Step-by-step explanation:

for function a

Domain {0, 1, 2, 3, 4}

Range {-4, -1, 2, 5, 8}

So the Domain is alreal numbers

for function B

y=7 is a straight line with zero slope and y-intercept 7 as shown below. Hence its domain (all allowed x-values) is all real numbers, and its range (all allowed y-values) is only 7

So both function A and B have all real numbers as their Domain

687.09 dollars       happy now

step-by-step explanation: 6870

1857 times .63 equals 1169.91 subtract that from 1857 you get 687.09