Marty's class collected $30.00 in a school-wide penny collection contest. If Tommy's class added $6.00 to the amount they collected, x, and then multiplied the sum by 2, they would have the same amount of money as Marty's class.
will mark Brain*

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

Percent increase and decrease. original number: 45 new number: 18