The surface area of a sphere is 900 square inches. what is the radius of the sphere?
recall the formula sa= 4(3.14)r^2.
15 inches
18 inches
30 inches
60 inches

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line

Shiny white dental insurance costs $258 per year. approximately one-third of insured people need a filling, which averages $110 each. 80% of insured people get a preventive check-up each year, and the average cost of this visit is $95. if you consider shiny white’s income and expenses, what is the expected value of each insured customer?

Suppose you want just guess at the answers in a 5 question multiple-choice test. each question has 3 responses and only one is correct. what is the probability of getting two questions right just guessing? 20 points 0.3275 0.2753 0.7532 none of the above