Answer:
Correct answer: First answer is true
Step-by-step explanation:
Where x is independently variable and refers to the elapsed time and
( i-d )(x) is a function or dependent variable and shows the number of gallons during that time.
f (x) = ( i-d )₍ₓ₎ = 3 x² + 2 - ( 4 x - 1) = 3 x² - 4 x + 3
( i-d )₍ₓ₎ = 3 x² - 4 x + 3
( i-d ) (3) = 3 · 3² - 4 · 3 + 3 = 27 - 12 + 3 = 18
( i-d ) (3) = 18 gallons after 3 hours in the tank
God is with you!!!