How do you multiply, fractions and make sure my answer is correct

If the decay of 742 mg of an isotope is described by the function A (t) = 742e-0.03t, where t is time in years. Find the amount left after 84 years. Round your answer to the nearest mg.

A car decelerates at a constant rate as it approaches a red light. The velocity of the car in meters per second as it decelerates is modeled by the function f (x) = - 4x+20, where x is time in seconds.

What are all the common factors of 16 and 64

If p (a) = 0.50, p (b) = 0.60, and p (a intersection b. = 0.30, what is the p (a union b) ? enter your answer as a decimal rounded to two places.

Monica has a 24-inch square frame. There are 4 equal sides. She paints 3/4 of one side of the frame blue. What fraction of the frame did Monica paint blue?

Angela bought 5 bottles of soda for a party. Each bottle was 2-liters. How many gallons of soda did she buy? Use 1 gallon = 3.785 liters

A sweater was marked up from $40 to $50. If p is the percent increase in the price of the sweater, which proportion can be used to calculate p? A. B. C. D.

Victor has a credit card with an APR of 13.66%, compounded monthly. He currently owes a balance of $1,349.34. Assuming that Victor makes no purchases or payments, how much will he owe after one year, to the nearest cent?

A bag contains 3 blue cards, 8 green cards, 12 red cards, and 4 yellow cards. You randomly choose a card.

Is 48 inches lesser than 2 yards and is 2 yards lesser than 7 yards