Find the value of the expression using the given values.4
+ 5
x = 7, y = -3
A. 9
B. -13
C. 39
D. -43
Answer: C
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Solve the equation (x in radians and ? in degrees) for all exact solutions where appropriate. Round approximate answers in radians to four decimal places and approximate answers in degrees to the nearest tenth.tan x(tan x -5) = 6
A. {1.3923 + n?, 6 + n?} B. {1.4056 + n?, 2.3562 + n?} C. {1.3923 + n?, 2.6454 + n?} D. {1.4056 + n?, 5.4978 + n?}
Use a cubic or quartic regression (as specified) to fit a curve through the points given in the table. Round to the nearest hundredth.
(Cubic)
A. y ? 0.38x3 - 5.35x2 + 24.97x - 33.40 B. y ? 0.38x3 - 4.35x2 + 22.97x - 33.40 C. y ? 0.28x3 - 5.35x2 + 22.97x - 33.40 D. y ? 0.28x3 - 4.35x2 + 24.97x - 33.40
Find all solutions of the equation in the complex number system.25x2 + 16 = 0
A. 
B. 
C. 
D. 
Solve the problem.A pest control company sprays insecticide around the perimeter of a 370 ft by 200 ft building. If the spray costs $0.10 per foot, how much did the job cost to the nearest dollar?
A. $617 B. $7400 C. $114 D. $57