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Danny has a coin collection. 20% of his collection are quarters. If Danny has 13 quarters, how many coins does he have in his collection altogether?

The length of a rectangle is 5mm more than twice the width. if the area is 168 square mm, fine the dimensions of the rectangle.

3y-x=3 and x is four times the value of y what is the value of x-y?

Solve the system of equations algebraically. 5x-3y=6 6x-5y=10

Identify the dependent and independent variables: bicep size and the amount of time spent weightlifting at the gym. Choose all that apply.

Who started the fire? A. Ryan B. Michael C. Dwight D. Kelly

If 80% of scheduled flights actually take place and cancellations are independent events, what is the probability that 3 separate flights will take place?

What is another way to express 64? A) 3 ^4 B) 6 ^4 C) 6.4 x 10^2 D) 8^2

Which values, when placed in the box, would result in a system of equations with no solution? Check all that apply. y = - 2x + 4 6x + 3y = A: - 12 B: - 4 C: 0 D: 4 E: 12

During a trip, Francine traveled x percent of the total distance at an average speed of 40 miles per hour and the rest of the distance at an average speed of 60 miles per hour. In terms of x, what was Francine's average speed for the entire trip? A.

You are planning a huge graduation party for your son. You decide to offer both a beef and a chicken meal at the party. The chicken dish costs $5, and the beef dish costs $7.