Solve the problem.The cost C of producing t units is given by C(t) = 5t2 + 5t, and the revenue R generated from selling t units is given by 
For what values of t will there be a profit?
A. t > 4
B. t > 0
C. t > 6
D. t > 5
Answer: A
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Write and solve an equation to find the percent increase or decrease. Round your answer to the nearest tenth of a percent, if necessary.On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 30 questions correct. What was the percent of increase?
A. 16.7% B. 20% C. 80% D. 5%
Solve the inequality.x3 + 5x2 - 36x > 0
A. (-9, 0) or (4, ?) B. (-9, ?) C. (-?,-9) or (0, 4) D. (-4, 0) or (9, ?)
Find the sign of the six trigonometric function values for the given angle.-4°
A. Positive: sine and cosecant; negative: cosine, tangent, cotangent, secant B. Positive: tangent, cotangent; negative: sine, cosine, secant, cosecant C. Positive: all D. Positive: cosine and secant; negative: sine, tangent, cotangent, cosecant
Evaluate the factorial expression.7!
A. 14 B. 5040 C. 42 D. 11