A water tank is being filled with water. Before water is pumped in, the water level in the tank is 15 inches high. After 20 minutes, the water level is 50 inches high. If t represents the time in minutes and h represents the water level, which of the following equations can be used to model this situation?

a. she will receive a refund of $278.

step-by-step explanation:

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

i cant answer this, theres no table. sorry man

step-by-step explanation: