Answer:
52
Step-by-step explanation:
Multiply grams per gallon times gallons to get grams.

First abswer is 51700
Sexond answer is 10340
No your friend I’d not correct although the slope is 4, the y-intercept is -3 because of the minus 3 in the equation.
Answer:
a=6 or -6
Step-by-step explanation:
Solve the determinant to get a²-36=0
(a-6)(a+6)=0
a=6 or -6