If you have a line that measures 25cm, and you scale the line by 5, what would the length of the new line be?

Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=6: 10 and b: c=21: 33

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.