Alexa is x years old. her sister, gloria, is 7 years older than alexa. their grandfather is five times as old as gloria. write and simplify an expression that represents their grandfather’s age in years.

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 .

You got a job selling magazines door-to-door. you are paid $100 per day plus $1.50 for each magazine you sell. which recursive formula models this situation?

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?