Kristen has 64 coins in her piggy bank. she has $9.25 in dimes and quarters. how many dimes and how many quarters does she have

Find a number such that if you add 8 and divide the result by 4 you will get the same answer as if you subtracted 3 from the original number and divided by 2

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?

Which expression is the factorization of x^2+10+21