Which of the following numbers is irrational? -9/5 , V5 , 7/3 ,V9

a) -9/5
b) V5
c) 7/3
d) V9

please answer this fast! the test is due today!!!

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.

What is x and y intercepts for y=x+7

Acolony contains 1500 bacteria. the population increases at a rate of 115% each hour. if x represents the number of hours elapsed, which function represents the scenario? f(x) = 1500(1.15)" f(x) = 1500(115) f(x) = 1500(2.15) f(x) = 1500(215)