Gaby has a total of 36 coins in her piggy bank. If the only coins in the bank are nickels and quarters, and add up to $6, how many of each coin are in her piggy bank?

1. during first 10 seconds 2. between 10 seconds and 35 seconds 3. during 35 seconds to 40 seconds

3x + 4y = 5 x- 3y = -7 solve by substitution

Mario is constructing a frame for 10 in. by 8 in. photo. he wants the frame to be the same with all the way around in the same area of the frame and photo to be 120 square inches what is the dimension of the frame?