Answer:
37.5 
Step-by-step explanation:
As the area of each of the side of the cube are the same we can multiply the area of one side by 6.
The area of one side is

Answer:
2af+bf = 2af+bf
Step-by-step explanation
f(x) = 4x2 – 3x. = x(4x−3)
Answer:
45.88 seconds
Step-by-step explanation:
= Time taken to sing the fist time = 
Time taken to sing the second time was
less than the first time so

Time taken to sing the third time was
less than the the second time

So the time it took the choir to sing the third time was 45.88 seconds.
To find the constant variation, solve for only one hour (in this case).
Divide 100 with 2
100/2 = 50/1
Each hour is 50 miles driven, so your constant variation is 50 mph