Ten less than eight times the number of marbles is greater than or equal to the sum of six times the number of marbles and fourteen

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

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?

Ian is in training for a national hot dog eating contest on the 4th of july. on his first day of training, he eats 4 hot dogs. each day, he plans to eat 110% of the number of hot dogs he ate the previous day. write an explicit formula that could be used to find the number of hot dogs ian will eat on any particular day.