In one day ,annie traveled 5 times the sum of the number of hours brian traveled and 2.together they traveled 20 hours. find the numbers of hours each person traveled

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

Which zero pair could be added to the function f(x) = x2 + 12x + 6 so that the function can be written in vertex form? o 3, -3o 6,629,-936, 36

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)