i’m having trouble understanding

Let w=23 . what is the value of w + 45 ?

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

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)