Please help me on this: A shoe box is shaped like a rectangular prism. It is 39.4 centimeters long, 17.8 centimeters wide, 11.4 centimeters tall. Jacob estimates that the surface area of a shoe box is about 2,800 square centimeters. Is he estimate reasonable? Explain your reasoning.

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let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0

time is equal to distance over rate so

t = d/r

need a little bit more information for the second question.