Solve the problem.If u = 12i - 2j and v = -7i + 9j, find u + v.
A. 19i + 4j
B. -19i + 7j
C. 5i + 7j
D. 4i + 7j
Answer: C
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Round the amount to the nearest cent.$8.1449
A. $8.145 B. $8.24 C. $8.14 D. $8.13
Write the formula using the "language" of variation. A = ?r2, where A is the area of a circle of radius r.
What will be an ideal response?
Solve the problem.In a parallelogram, each of the two larger angles is 48° less than twice the smaller angles. Find the measure of each angle.
A. smaller angles = 44°; larger angles = 136° B. smaller angles = 57°; larger angles = 123° C. smaller angles = 16°; larger angles = 164° D. smaller angles = 76°; larger angles = 104°
Solve the problem.The following data represents the normal monthly precipitation for a certain city in Arkansas. 
Draw a scatter diagram of the data for one period. Find the sinusoidal function of the form 
that fits the data. Draw the sinusoidal function on the scatter diagram. Use a graphing utility to find the sinusoidal function of best fit. Draw the sinusoidal function of best fit on the scatter diagram.
What will be an ideal response?