Find the indicated vector.Let u = 
. Find -9u.
A. 
B. 
C. 
D. 
Answer: B
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Graph the exponential function whose equation is given. Start by using -2, -1, 0, 1, and 2 for x and finding the corresponding values for y.f(x) = 3x
A. 
B. 
C. 
D. 
Solve the problem.The paired data below consist of the temperatures on randomly chosen days and the amount a certain kind of plant grew (in millimeters). By using linear regression, the following function is obtained: 
where x is temperature and y is growth in millimeters. Use this function to predict the growth of a plant if the temperature is 59.
A. 27.05 B. 27.52 C. 27.99 D. 25.81
Solve using matrices.3x + 4y = 123x + 6y = 24
A. (6, 4) B. (-4, 6) C. (-4, -6) D. (6, -4)
Solve the problem.The school bake sale sold a total of 28 plates of brownies and slices of cake and collected a total of $103.50 for the sales. They sold 6 more plates of brownies than slices of cake. How many plates of brownies and slices of cake were sold?
A. 11 plates of brownies and 17 slices of cake
B. 
plates of brownies and 
slices of cake
C. 
plates of brownies and 
slices of cake
D. 17 plates of brownies and 11 slices of cake