Answer:
Step-by-step explanation:
-3b - 3b= (-3b)+(-3b)= -6b
X = the number of months the tire was used
y = the thickness of the tire tread
y = -(3/7)x + 20
Substitute x for 20 (the number of months the tire was used) and solve for y.
The next question: Substitute x for 49 (the number of months the tire was used) and solve for y.
Answer: y=4x+8
Step-by-step explanation:
Answer:
fa
Step-by-step explanation: