The following are the scores in Math of the samples 15 Grade 10 students. 60,61,58,70,62,74
75,78,80,68,85,86
80,65,70
Compute the following:
a. Sample mean
b. Sample variance
c. Sample standard deviation​

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

The quadratic function h(t)=-16.1t^2+150 choose the graph representation

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.