Imani's time=4 times carissa's time
=28 min
there fore, i=4*c=28
c=i/4;=>28 divided by 4 which is 7 min
The formula of an area of a circle with radius r:

Part A.
We have diameter of the circle d = 8 in. The diameter of a circle is equal two times length of a radius.
Therefore:

Calculate the area:

Answer: C. 16π square inches.
Part 2.
Look at the picture.
Total area:

Answer: C. 36π square inches
D and E. If I remember right that should be the answer.
Answer:
Grayson biked at a speed of 15 mph. Maya biked at a speed of 13 mph.
Grayson biked 2 mph faster than Maya.
Step-by-step explanation:
45/3 = 15
26/2 = 13
I think it should be x(ax +b) + c. Not sure though.