Which ordered pair would form a proportional relationship with the point graphed below? On a coordinate plane, a line goes through points (0, 0) and (45, 30).
(10, 10)
(25, 35)
(70, 50)
(90, 60)

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.

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

How to solve a simultaneous equation involved with fractions?