SOLUTION: Nick works part-time at a bookstore. His pay varies directly with the number of hours worked. In one week, he earned $120 for 8 hours of work. a) Define two variables for this

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Nick works part-time at a bookstore. His pay varies directly with the number of hours worked. In one week, he earned $120 for 8 hours of work. a) Define two variables for this       Log On


   

Question 1183048: Nick works part-time at a bookstore. His pay varies directly with the number of hours worked. In one week, he earned $120 for 8 hours of work.
a) Define two variables for this relation.

b) Describe the rate of change in words.

c) Determine an equation to represent the relation:

d) Use the equation to determine how many hours Nick must work to earn $345
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
w, amount of pay or wages
x, time worked in hours
k, variation constant; actually his hourly pay rate

highlight_green%28w=kx%29

The description includes data that w=120 and x=8. You can find k.

Answer by ikleyn(52787) About Me  (Show Source):
You can put this solution on YOUR website!
.

This problem is good to develop your common sense,  instead of  (and rather than)  making formal exercises.


From the problem's description,  the hourly earning rate is  120/8 = 15 dollars per hour.


After that,  you can easily answer all other/remained questions.



                                REMEMBER and MEMORIZE it:

            all these formal exercises in this problem are worth  NOTHING.



It is only  BAD  EDUCATIONAL  system/conception  may allow/produce such teaching as questions in this problem . . .