For direct variation, y = kx
8 = -4k
k = 8/-4 = -2
Therefore, required equation is y = -2x
when x = 7, y = -2(7) = -14
Answer:
does it have answer choise
Step-by-step explanation:
Answer:
10x-10
x-width
Step-by-step explanation:
width-x
4x-5-length
formula for P of rectangle- (a+b)2
(x+4x-5)2
(5x-5)2
=10x-10
<span>If 4 cans of coffee cost 2.40, then divide this by 4 to find out how much one can of coffe costs: 2.40/4 = .60. Now, we need to find 1/4 of .60. To do so, again divide by 4: .60/4 = .15. So, the cost of 1/4 can of coffee will be 15 cents.</span>
