Domain is everything below 0. Range is all real numbers. It is a function as it passes the vertical line test.
P = 2a + b + c
Subtract 2a + b on both sides
c = P - (2a+b)
c = P - 2a - b
Hope that helps :)
Answer:
42
Step-by-step explanation:
105 - 63 = 42
27 divided by 15 is 1.8, so that should be the correct answer.