3x=4+13x=5x=5/32x=2* 5/32x=10/3
First of all, 15 minutes is 1/4 of an hour. So 8:15 is 8.25 hours.
(8.25 hours/day) x ( 9 $/hour) x (5 days) = $371.25
Answer:

Step-by-step explanation:
I'm going to write it so I can see it better:

You can use the difference of squares formula:

The inverse value of sin⁻¹(A) = Ф° , is sin(Ф) = A
sin(Ф°) = (-√3)/2 THAT MEANS Ф = -60° OR Ф = 300°