3. Atale is filling a cylindrical tank with gasoline at a rate of 15 cubic feet per minute. The area of the base of the tank is 100 square feet. If the height of the tank is 7.5 feet, how many minutes will it take to fill the tank completely? A 200 minutes
B 150 minutes
C 100 minutes
D 50 minutes

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation:

i saw this question before, dont know the asnwer srry

step-by-step explanation:

ur right ive taken the test

step-by-step explanation:

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0