The half life of silicon-32 is 710 years. if 70 grams is present now, how much will be present in 200 years?

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

Interpret the following expression (5y^2-7)^3/(2y)^2

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?