When Emmy went to bed, it was a frigid 9°F outside. The temperature has been dropping 2°F each hour. Write an equation that shows the relationship between the number of hours since Emmy went to bed, x, and the temperature in °F, y.

the answer on e2020 is

10

4/5

3/5

4/3

step-by-step explanation:

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

a. she will receive a refund of $278.

step-by-step explanation:

but which class are u may know that first