Which is faster 80km/h or 60 mi/h and why?

When you answer this can you explain

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)

Find the arc length of the semicircle. 7the grade