Answer:
35 miles per hour
Step-by-step explanation:
The slope is
m = (y2-y1)/*x2-x1)
= (280-210)/(8-6)
= 70/2
= 35 miles per hour
Answer is c
199.95 x 25/100
=49.9875
Sale price
=199.95-49.9875
=149.9625
=149.96
D.