X - quarters, x+5 - dimes.
$74=7400 cents
Then
(25x+10(x+5))=(25x+10x+50)=(35x+50) cents.
35x+50=7400
35x=7400-50
35x=7350
x=7350/35
x=210 quarters
x+5=210+5=215 dimes
210 quarters and 215 dimes
Answer:
x ≥ 88
Step-by-step explanation:
In order to have at least an average of 80 after 4 tests, the sum of her scores must be at least 80 * 4 = 320 so we can write the following inequality:
71 + 78 + 83 + x ≥ 320
232 + x ≥ 320
x ≥ 88
C) I think
If I’m wrong I’m rlly sorry
