Find a positive value of the given variable so that the trinomial is factorable.2x2 + bx + 1; b = ?
A. 2
B. 1
C. 3
D. 4
Answer: C
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Divide.0.08 ÷ 0.008
A. 0.01 B. 1 C. 0.1 D. 10
Use logarithmic differentiation to find the derivative of y with respect to the independent variable.y = (sin x)cos x
A. cos x cot x - sin x ln(sin x) B. cos x ln ( sin x) C. (sin x)cos x(cos x cot x - sin x ln (sin x)) D. cos x cot x - ln (sin x)
Solve the problem.Coffee is best enjoyed at a temperature of 115°F. A restaurant owner wants to discover the temperature T at which he should serve his coffee so that it will have cooled to this ideal temperature in 5 minutes. He discovers that a cup of coffee served at 200°F cools to 180°F in one minute when his restaurant is at 67°F. If he maintains the restaurant temperature at 67°F, at what temperature should he serve the coffee to meet his goal?
A. 170°F B. 175°F C. 200°F D. 195°F
Solve the problem.A size 4 dress in Country C is size 42 in Country D. A function that converts dress sizes in Country C to those in Country D is 
Find a formula for the inverse of this function.
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = x - 38
D. f-1(x) = x + 38