Someone 100 points to answer 2 questions! spell everything out because i have more questions like this and i have no idea how to do them a. it is not 5^3 b. i have no idea

I gotcha!

First answer is A.

Second answer is also A.

See screenshots below if your interested in how it's solved :)

A.

easy, remember rules of exponents

the only one you need to know for this question is this one: \frac{x^m}{x^n}=x^{m-n}

also x^{-m}=\frac{1}{x^m}

so in this case

\frac{5^5}{5^8}=5^{5-8}=5^{-3}=\frac{1}{5^3}

answer is 1st option

B.

same as A

answer is 1st option

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you