Messy Marvin buys a bag of peanuts and eats 20% of whatever is in the bag each day. If there are 256 peanuts left in the bag after three days, how many peanuts were originally in the bag?

a baker wants to make 10 batches of cookie. each batch uses 2/3 cup. of sugar. how many cups of sugar will the baker need to make all 10 batches

Solve - 2x2 + 3x - 9 = 0.

Maria can paddle her canoe 2 miles upstream against the current in the same time it would take her to paddle 6 miles downstream. Maria can paddle 2 mph in still water. What is the speed of the current?

Find the equation for the line with the following properties. A slope of 0.25 and an x-intercept of - 4.

A train arrives at the station with 150 passenger's on board. 2/5 of the passengers get off the train in Seattle, and then 35 passengers board the train. how many passengers are on the train when it leaves the station

Aaron wants to buy 2 concert tickets that cost $25.50 each. Aaron's grandfather pays him $4.25 an hour to rake leaves. How many hours does Aaron have to rake leaves to earn the total cost of the tickets?

Writes the pair of fractions with a common denominator for 3/10 and 2/5

The volume of this cylinder is 6,430.72 cubic centimeters, the height is 8 cubic centimeters. What is the radius? Use ≈ 3.14 and round your answer to the nearest hundredth.

A meteorologist predicts a 20% chance of rainfall today. Which statement describes the likeihood of rainfall today?

Are a rational expression and its simplified forms equivalent? Provide mathematical examples to support your opinions.