Question

For spring cleanups, a landscaper charges a flat fee of $60 plus $20 for each hour of labor. Which equation models the cost in dollars, c, for a cleanup that requires h hours of labor?

a. c= h/20 + 60
b. c= 20/h +60
c. c= 20h+60
d. c= 20 +60h

Answer 1

Hello!

This should be written in slope intercept form, which is y=mx+b. In our case, it is c=mh+b. As you can see, the only answer option that multiplies by h before adding the y-intercept is c. c=20h+60. This follows slope intercept form, so therefore it is correct.

I hope this helps!

Answer 2

Correct option is:

c. c= 20h+60

Explanation:

For spring cleanups, a landscaper charges a flat fee of $60 plus $20 for each hour of labor.

For 1 hour he charges= 60+20

For 2 hours he charges=60+20+20

= 60+2×20

For 3 hours he charges=60+20+20+20

= 60+3×20

For h hours he charges= 60+20h

Hence, if c is the cost in dollars and h is the hours of labor

Then, c=60+20h

Hence, Correct option is:

c. c= 20h+60