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.
hours

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)

W-16=-12 solve each one step equation plz

Arestaurant offers delivery for their pizzas. the total cost the customer pays is the price of the pizzas, plus a delivery fee. one customer pays $23 to have 2 pizzas delivered. another customer pays $59 for 6 pizzas. how many pizzas are delivered to a customer who pays $86?