The average athlete is able to begin activity 90 days after having a knee operation. The standard deviation is 15 days. 70 percent of athletes are able to participate within how many days? Round to the nearest day.

Rick is on a bicycle trip. every 4 days he bikes 230 km. if rick keeps this same pace for 16 days, how many kilometers will he bike?

What does the first stage of a multistage rocket do?

How do refracting telescopes magnify a far away image? a. by directing light beams to meet at a focal point b. by absorbing light beams’ wavelengths c. by forcing light beams to change direction d. by measuring light beams’ velocity