Help me and you get 100 points and Brainliest The table shows the test scores and the sleep averages of several students.

a. Write the least squares regression equation that models the data. Let x = hours of sleep and y = test score.

b. Use the equation to determine the approximate test score of a student who sleeps an average of 8 h a night. Show your work.

A25-inch wide drum is used in a marching band. what area does the top of the drum cover? round to the nearest hundredth. (use 3.14 for pi.)

Use set buikder notation to represent the following set: {, -2, -1, 0}

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6