Answer:
21,800
Step-by-step explanation:
Total costs is $16,700 x 4 years = 66,800
He saved 21,000 + receives 24,000 (6,000x4) grants for a total of 45,000 saved.
costs of 66,800 - receipts of 45,000 = 21,800 needed.
Answer: 56
Just trust me I had this question on a quiz
use substitution and solve this 8x+4(-2x+3)=12
with the 4 distributed its
8x-8x+12=12
then you can cancel out the 8x and -8x and switch the 12 over into a -12 canceling out the 12s making it x=0