The total number of dancers in the school is 150.
Y=-5x+9
3x+2(-5x+9)=4
3x-10x+18=4
-7x=4-18
-7x=-14
x=2
5(2)+y=9
10+y=9
y=9-10
y=-1
The answer is (2,-1) :)
<u>Answer:</u>
$109.38
<u>Step-by-step explanation:</u>
$12.50 x 4 hours = $50
$12.50 x 4 hours and 45 minutes = $59.38
$50 + $59.38 =
$109.38