12/15 i hope this helps , 20 goes into one hour 3 times so i multiplied 4/5 x 3
Ah, good ol' substitution. You need to take the phrase y+2 and replace every x with it. Then solve for y.
y=(y+2)^3-4(y+2)^2-6(y+2)+8
The range is the highest number minus the lowest number
98 - 13 = 85 <==
S = 60W + 650 <== ur equation
after 18 weeks...so sub in 18 for W
S = 60(18) + 650
S = 1080 + 650
S = 1730 <==
For part A, there are 4 equal lengths put together and the sum of them is 36. So dividing 36/4 gives us 9.
So the length of each edge is <u>9 cm</u>!
For part B, finding surface area means the total area of the cube on its six faces.
So for one face of the cube, the area is
9 × 9 = 81 cm^2
There are 6 faces so we multiply 81 by 6 and get 486 cm^2.
Hope this helps!
