250 miles is 1 320 000 feet.
A penny is 0.005 feet tall.
You'd need 1 320 000 / 0.005 = 264 000 000 pennies to make a stack that high
Answer
given,

interval = [-32, 32]
differentiating the given equation


hence, the above solution is not defined at x = 0
and x = 0 lie in the given interval i.e. [-32, 32]
so, at x = 0 the function is not differentiable.
Hence, mean value theorem does not apply to the given function.
1/8+ 1/4(2/8)+ 3/8+ 1/2(4/8)+ 5/8+ 3/4(6/8)+ 7/8= 28/8 = 3 1/2
Length of shorter piece is 13 ft
Length of longer piece is 61 - 13 => 48 ft