y=7 i got this answer cause i realized that 12 is only 3 numbers away from 9 so i added 3 to 4 and 3+4=7
hope it helps
Answer:
lets see
Step-by-step explanation:
Average rate of car: x+3
Walking rate: x
The equation is
10/15 = x/x+3
So
x = 6
Average rate of car: 9 mph
Walking rate: 6 mph
Answer:$29.82
First find the discount, then find the tax
