Aplumber charges $70 per hour plus $40 for the call. what does he charge for 4 hours of work

The answer is $320.

In order to solve this, you can start off by turning this word problem into an expression.

$70x → $70 per hour (x represents the amount of hours)

+40 → plus $40 for the call

Substitute the x for 4 and solve the equation.

70x+40

70(4)+40

280+40

320

The plumber charges $320 for 4 hours of work.

easy its decreasing

step-by-step explanation:

because its top point is at the to of the graph on the left side (atleast from the veiw i see it) now if that top point wast in the lower part of the graph it would be increasing hope this have a nice day

image for option 4

step-by-step explanation:

i just know the internet