Grade 7 : check an answer? !
gaby deposited $200 in a savings account earning 5% simple interest over 7 years. what
was the total interest gaby earned?
200 * 0.05 * 7 = 70
is that answer correct?

Which number is irrational? a) 16 b) 18 c) 25 d) 36

Acable car begins its trip by moving up a hill. as it moves up, it gains elevation at a constant rate of 50 feet/minute until it reaches the peak at 2,000 feet. then, as the car moves down to the hill’s base, its elevation drops at the same rate.

You are remodeling your kitchen. you’ve contacted two tiling companies who gladly told you how long it took their workers to tile of a similar size jim completed half the floor in 8 hours. pete completed half of the other floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles