Adam plays 1/4 of a song on his guitar in 1/2 of a minute. how long will it take him to play the entire song?

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?