On a sheet of paper complete the following problem: Suppose a study shows that adults aged 65 and over spend a mean of 1.5 hours per day on social media with a standard deviation of 0.75 hours. Assume the variable is normally distributed. If an adult is selected at random, what is the probability that they spend more than 1 hour per day on social media? Write your answer as a percent rounded to the nearest tenth of a percent.

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

M.xyz =radians. covert this radian measure to its equivalent measure in degrees.

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)