Debra's fish tank has 15 liters of water in it. She plans to add 5 liters per minute until the tank has more than 50 liters. What are the possible numbers of minutes Debra could add water?
Use t for the number of minutes.

the answer is a) y= 2 csc [0.5 (x+pi/2)]-1

step-by-step explanation:

"standard form:

3x2 + 14x − 10 = 0

solutions based on quadratic formula:

x1   = −14 − √ 142 − 4×3×(−10) /   2×3   = −14 − 2 × √ 79 /   6   ≈ −5.296

x2   = −14 + √ 142 − 4×3×(−10) /   2×3   = −14 + 2 × √ 79 /   6   ≈ 0.629