(4x - 4) - 3 simplified = 4x -7
You divide -15 on both sides to keep the x alone
-240/ -15=16
A negative divided by a negative is a positive so x=16
The volume of a cylinder is pi*r^2*h
The radius is half the diameter, so 40/2=20, and the radius is 20 ft.
Plugging in: pi*20^2*32=pi*400*32=12800pi=40212.38597
So the volume is about 40212.4 ft^3 and the expression we used is pi*20^2*32
Hope this helped!
It’s the first one because it has 7 rows and 7 columns which show that it is 7 times 7 or 7^2.
B! Would be the answer! Good luck on the test!
