Perform the indicated operation. Assume that all variables are nonnegative.(2
+ 2)(4
+ 7)
A. 36
B. 70 + 22
C. 22
+ 14
D. 14 + 8
+ 14
Answer: B
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Evaluate the requested trigonometric function using the information given. sin ? = - 
; 3?/2 < ? < 2?Find csc ?.
A. - 
B. 
C. - 
D. 
Answer true or false.A system of two linear equations in two variables can have exactly one solution.
A. False B. True
Solve the problem.The cost C of producing t units is given by C(t) = 3t2 + 8t, and the revenue R generated from selling t units is given by 
For what values of t will there be a profit?
A. There will be a profit when more than 9 units are sold. B. There will be a profit when more than 7 units are sold. C. There will be a profit when more than 8 units are sold D. There will be a profit when 0 units are sold.
Solve the system using the inverse that is given for the coefficient matrix.
?
A. {(2, -3, 2)} B. {(2, 4, 2)} C. {(-3, 6, 1)} D. {(2, 9, 6)}