Answer:
45 minutes in all
Step-by-step explanation:
-18=7-4y
-7 -7
________
-25=-4y
___ ___
-4 -4
y= 6.25
I think The answer is 2920
4(5)+4(3)+3(2)=$38 total cost =$38
Answer:
x=-2, y=-3
Step-by-step explanation:
we can rearrange the questions to make it easier
y=3x+3
2y=-3x-12
if you add the two equations, you get
3y=0x-9
so y=-9/3 = -3
plug y into one of the equations
-3=3x+3
-6=3x
x=-2
and then check your work by plugging into the other equation:
2*-3=-3(-2)-12
-6=6-12
-6=-6
