The answer is -8 because -2 * 4
Answer:
15.6 miles needed for Sat. and Sun.
Step-by-step explanation:
100-(total of all the days)=how many miles he needs on Sat. and Sun.
100-84.4=15.6 miles needed
D + q = 35....d = 35 - q
0.10d + 0.25q = 6.50
0.10(35 - q) + 0.25q = 6.50
3.50 - 0.10q + 0.25q = 6.50
-0.10q + 0.25q = 6.50 - 3.50
0.15q = 3
q = 3 / 0.15
q = 20 <=== 20 quarters
d + q = 35
d + 20 = 35
d = 35 - 20
d = 15 <=== 15 dimes
