9. Geometry Which expression represents the perimeter of the figure?
5c + 6
2c + 5

A.10c^2 + 30

B.36c

C.14c + 22

D. 7c+ 11

The tiles below are pieces of a normal ecg tracing representing a little less than two heartbeats at a resting rate of 80 bpm. arrange the tiles in their correct order. rank from first to last. do not overlap any tiles.

Acoin bank containing only dimes and quarters has 12 more dimes than quarters. the total value of the coins is $11. how many quarters and dimes are in the coin bank?

How is working backward similar to solving an equation?