A study looked at the running times of certain movies released in​ 2005, as shown to the right. The standard deviation of these running times is 18.4 ​minutes, and the quartiles are Upper Q 1 equals99 minutes and Upper Q 3 equals118 minutes. ​a) Describe the spread in running times based on ​i) the quartiles. ​ii) the standard deviation. ​b) Should there be any concerns about using either of these descriptions of​ spread? Explain.

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

Given: ∆mop p∆mop =12+4 3 m∠p = 90°, m∠m = 60° find: mp, mo

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.