Jason needed to get his computer fixed. He took it to the repair store. The technician at the store worked on the computer for 5.75 hours and charged him $103 for parts.
The total was $419.25. What was the cost of labor, per hour?

Chose the graph below that represents the following system of inequality’s

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.