Answer:
a=-7.68
Step-by-step explanation:
3a+13.61=-9.43
-13.61
_____________
-23.04
3a=-23.04
-23.04/3= -7.68
$4.26
63.90 divide by 15 = $4.26
the price of one tube is $4.26
The mileage is 12
and the price is $10
i think is (-3,2) because it look like in negative and posted
Answer:C
C