She completed 3/4 of her homework
The answer is A
there is not enough hours to build everything and A has the right equation
Answer:
74.4 (llllllllllll ignore this i need 20 characters to answer)
Here is the equation:

Since both decimals are negative, the answer will be positive.
- Negative times Negative = Positive
Divide both sides by -3.9 to leave the variable alone:

r is equal to 4 → r = 4