Members of the student council are selling T-shirts. The number of T-shirts sold and the amount of money collected each day is shown in this table. T-shirt Sales Day T-Shirts Sold Amount Collected Monday 12 $180 Tuesday 15 $225 Wednesday 21 $315 Thursday 17 $255 Write an equation that can be used to determine the amount of money collected, m, in dollars, for the number of T-shirts sold, s.​

let soccer = x and golf = y

part a

1st equation: x + y = 125

2nd equation: x = y +45

part b

replace x in the 1st equation with the 2nd one:

y + 45 + y = 125

simplify:

2y + 45 = 125

subtract 45 from each side:

2y = 80

divide both sides by 2:

y = 80/2

y = 40

she plays golf for 40 minutes.

part c

no because she plays soccer for 45 minutes longer than golf 40 +45 =   85 minutes, not 80 minutes.

answer: 800

step-by-step explanation:

60: 45 =12: 9 =4: 3 so the answer is 4: 3