Astudent accidentally added five to both the numerator and denominator of a fraction, changing the fraction's value to 1/2 . if the original numerator was a 2, what was the original denominator?

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.

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