A Moped bike travels at a constant rate shown in the table below. At this rate, how many miles will the Moped bike travel in 3/4 of an hour?

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb

ab will be equal to

so, converting firstly the mixed fractions to improper fractions and then "adding".