Answer:
see explanation
Step-by-step explanation:
Given
s(t) = 10t²
To find s(2) and s(5) substitute t = 2 and t = 5 into f(t)
(a)
s(2) = 10 × 2² = 10 × 4 = 40
s(5) = 10 × 5² = 10 × 25 = 250
(b)
s(5) - s(2) = 250 - 40 = 210
This represents the distance travelled in 3 hours
(c)
The average rate of change is measured as

= 
= 
= 70 miles per hour
F(5)= 17
We want to plug in 5 for x into the equation.
f(x) = 3x +2
f(5) = 3(5) +2
=15 +2
=17
1430 miles in 6.5 hours because you multiply 220 by 6.5 and equals 1430miles
Let, the width = x
Then,Length = 2x
Now, Area = l * w
A = (2x)(x)
128 = 2x²
x² = 128/2
x = √64
x = 8
In short, Your Answer would be 8 Feet
Hope this helps!