Answer:
C. 840
Step-by-step explanation:
First, solve for the hours above 40.
Since she worked 52 hours, we can subtract 40 from 52 to find the amount of hours she worked overtime.
52-40=12
Since we know that overtime hours are worth more, we can multiply the 12 extra hours by 20.
12*20=$240
Now we need to calculate for her regular hours.
She worked 40 regular hours, so lets multiply that by her regular rate per hour.
40*15=$600
Now add both values for the total income.
600+240=$840
The answer is C. $840
Hope this helps!