Checks: $63.21, $37.79, and $15.50; cash: 24 one-dollar bills, 11 ten- dollar bills, 20 quarters, 22 dimes, and 40 pennies; less $20.00 as cash recieved

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?

You have 37 coins that are nickels, dimes, and pennies. the total value of the coins is $1.55. there are twice as many pennies as dimes. find the number of each type of coin in the bank.