Answer:
Step-by-step explanation:
Because 3x10=30 and 31 is greater than 30 by 1 more.
Answer =-0.7x +0
Find the gradient by y2-y1/x2-x1
-14 -7/ 20- -10
-21/30
-0.7
And plug in the coordinates to find the y intercept
7= -0.7 (-10) + c
C=0
Distance traveled in one minute =
miles
As the speed is constant, after 1 hour or 60 minutes, its speed will be =

= 45 miles
Hence, the speed of the car is 45 miles per hour.