1. A train has 20 carriages, and each carriage seats 8. When the train is full, it holds z people. 2. A room is x metres long and y metres wide. If the length were halved, the perimeter of the floor of the room would be p metres.
3. p new pench + s pounds = x pounds

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)