Heather made $299 for 13 hours of work. At the same rate, how much would she make for 18 hours of work?

$414

Step-by-step explanation:

We know that Heather made $299 for 13 hours of work.

So, to find how much Heather will make for 18 hours of work at the same rate, we can write and solve for the following proportion:

Notice that we align the rates vertically and the measurements horizontally (dollars in the numerator and hours in the denominator).

So, to find how much Heather will make for 18 hours, we will solve for x. Cross-multiply:

Divide both sides by 13:

So, Heather will make $414 for 18 hours of work.

And we're done!