MaxWong

Information missing.

How much has changed in the cost of gas?

Price of gas in yr 2000 is not needed because the price will be directly proportional to the percentage of inflation......

Oops. Maybe that wasn't a spiral.

\(-4 + \dfrac{f}{5} = 2\\ \dfrac{f}{5} = 6\\ f = 6\times 5 = 30\)

Hope someone like Melody or CPhill(wait he's online!!) comes out from nowhere......

This problem can be solved by division because division means distributing things evenly into some pieces.

Total is 1/4 of a mile and there are 4 people.

Therefore each person needs to run for : \(\dfrac{1}{4}\text{miles}\div 4 = \dfrac{1}{4}\text{miles}\times \dfrac{1}{4} = \dfrac{1}{16}\text{miles}\)

Express y in terms of x means no other variable exists in the final expression......

I am stuck at this step too......

28 = \(2^2 \times 7\)

72 = \(2^3 \times 3^2 = 2^2 \times 2 \times 3^2\)

Therefore GCF = \(2^2\) = 4

Same as EP's answer

\(\dfrac{4}{5}\div\dfrac{3}{7}\\ =\dfrac{\frac{4}{5}}{\frac{3}{7}}\\ =\dfrac{\frac{4}{5}\times 5\times 7}{\frac{3}{7}\times 5\times 7}\\ =\dfrac{4\times 7}{3\times 5}\\ =\dfrac{28}{15}\\ =1\dfrac{13}{15}\)

Same as EP's answer.