Is 0.225 a rational number?

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)

Robin spent 25% more time on his research project than he had planned he’s been an extra h ours on the project which of the following expressions could represent the number of hours rob actually spent on the project

Last week jason walked 3 1/4 miles each day for 3 days and 4 5/8 miles each day for 4 days. about how many miles did jason walk last week?