I think that (1/4)x+8 would be your algebraic expression.
5x(6^2 +1)
Is 30x3+5x in factored form
X^2 + 35x - 450
Factor
(x + 45)(x - 10)
(x + 45) is the length
Twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2
