An office supply store adds a $2.50 markup to calculators and sells them for $8.95. (a) What is the cost (in $) of the calculators? $ 6.45 Correct: Your answer is correct. (b) What is the percent markup based on cost? (Round your answer to the nearest tenth of a percent.)

Asailor is looking at a kite. if he is looking at the kite at an angle of elevation of 36and the distance from the boat to the point where the kite is directly overhead is 40 feet, how high is the kite?

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared

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 .