the cost of a ride service varies directly with the distance traveled. it cost $35. for a ride from the city center to the airport, 14 miles away. write the equation that relates the cost, c, with the number of miles, m. what would it cost to travel 22 miles with this service?

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 .