$ per min is a rate. you multiple by minutes to get dollars.
A = 10x
B = 5x + 20
set them equal to find minutes, x.
10x = 5x + 20
10x - 5x = 20
5x = 20
x = 4
HOPE THIS IS THE ANSWER FOR YOUR QUESTION
Answer:
the answer I got is a=-the sign and but 2b under it +7
Answer:
yes they are
Step-by-step explanation:
they are in direct proportion when two or more quantities increase or decrease at the same ratio
