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.

step-by-step explanation:

this is not possible to solve with the info given.   you need at least an one angle somewhere.

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.