25d^2-30d-35d+42=25d^2-65d+42.
The first working out is correct, z = 3
Answer:
hes paid 13,640
Step-by-step explanation:
Hey!
You have to divide the total amount she has by the surface area.
Surface area = 2(wl+hl+hw)
That gives you:

The surface area is 126 ft. Now divide the total amount she has by the surface area.

<em>That means she can cover 9 boxes</em>

The answer would be A. 4
Here’s what I would do.
Multiply both sides by 12 so u can get m- 2 by itself.
m-2= 2
How’d I get the two? It comes from when I multiplied 12 on both sides. 12/6= 2
Now ur equation should be
m-2=2
Do the opposite and add two to both sides to get the variable by itself.
m=4
Hope this helps :)))