Plase guys help!! ;(

3) What is to be subtracted from + − to get − + −

15 points ! ~ see if you know the answer to both you!

Is it greater than or less than7*3_9*2

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)