It is D)19 bc 5x3=15 then 7-3=4 so 4x1=4 now 15+4=19
I believe the answer would be "infinitely many solutions" because you can put any number as x and y would be a different answer each time for both of the equations given. i hope this helps :)
Answer:
$15.39
Step-by-step explanation:

A=3.14
A=38.465
38.465*8=307.72
307.72*.05=15.386
Answer:
f(y) = 4y2 - 4v
f(y) = 4y² - 4(-4) = 4y² + 16
f(y) = 4y² - 4(-3) = 4y² + 12
f(y) = 4y² - 4(-2) =4y² + 8
f(y) = 4y² - 4(-1) = 4y² + 4
Step-by-step explanation: