Rachel drove 200 miles using 9 gallons of gas. at this rate, how many gallons of gas would she need to drive 420 miles?

What are the domain and range of the function? f(x) = -4 (sqrt)x

A(t)=728(1+0.04)^t how much money did aditya originally invest

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .