The variables is the time the student studies and the grade the student recives.
<span>(3 x 3) + (2 x 8)
9 + 16 = 25</span>
Answer:
y=3x-4
Step-by-step explanation:
slope = 3
(y-5) = 3(x-3)
y-5 = 3x-9
y-5+5=3x-9+5
y=3x-4
(21 miles/gallon) x (21 gallons) = 21 x 21 = 441 miles
