Jack's Plumbing charges customers $100 per hour for repair jobs. A-1 Plumbing charges according to the equation y = 75x + 50, where x = time in hours and y = cost in dollars.
Explain why A-1 Plumbing charges less than Jack's Plumbing for a 4-hour repair job.
Does A-1 Plumbing charge less than Jack's Plumbing for all repair jobs? Explain why or why not.

PLEASE HELPP

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.