A stalacite grows 50 millimeters in 251 years. Estimate the unit rate if growth per year. The unit rate is about __ millimeter(s) per year. *5
*50
*0.2
*2

The mean of 10 values is 19. if further 5 values areincluded the mean becomes 20. what is the meanthese five additional values? a) 10b) 15c) 11d) 22

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1

Question 3(multiple choice worth 1 points) use the arc length formula and the given information to find r. s = 16 cm, θ = 48°; r = ? sixty divided by pi cm thirty divided by pi cm one third cm one hundred twenty divided by pi cm