a tap (A) fills a tank in 5 hours, atap (B) fills the same tank in 10 hours. Which of the alternatives below best represents thetime spent, if both taps are open simultaneously filling the same tank?

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Sum is 17 and their difference is 3

Find the zeros of each function. f(x) = 6x^2 - 7x - 20