9514 1404 393
Answer:
(a) 3/2
Step-by-step explanation:
The scale factor is the ratio of corresponding side lengths.
sf = 63/42 = (21×3)/(21×2) = 3/2
0.125 or 1/8
hopes it helps you
Answer:
y=2.5x
Step-by-step explanation:
You already know that the cost for 1 book is $2.50, which is also the rate of change. So you just basically multiply 2.50 by 5 to get 12.50.
Rewritten: y=15x + 50
slope: 15
y intercept: (0,50)