13.75 = 0.25b + 0.50 combine like terms show all steps

Alawn mower manufacturer incurs a total of 34,816 in overhead costs and 388 per lawn mower in production costs. how many lawn mowers were manufactured if the average cost of productions is 660

What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank