Sandra prepared 15 kilograms of dough after working 3 hours. How many hours did Sandra work if she prepared 20 kilograms of dough? Solve using unit rates.

Gabrielle's age is three times mikhail's age. the sum of their ages is 40 . what is mikhail's age? __ years old

Acertain company's main source of income is a mobile app. the company's annual profit (in millions of dollars) as a function of the app's price (in dollars) is modeled by p(x)=-2(x-3)(x-11)p(x)=−2(x−3)(x−11) which app prices will result in \$0$0 annual profit? enter the lower price first.

If 5x + 20 × 2^2-3× = 10 ×2^-2x+5 what is the value of x