Find the exact value of the expression.sin 190° cos 70° - cos 190° sin 70°
A. - 
B. - 
C. 
D. 
Answer: D
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Divide and simplify.
÷ 
A. 
B. 
C. 
D. 
Simplify the polynomial by adding or subtracting, as indicated. Express your answer as a single polynomial in standard form.(8x5 + 19x4 - 15) - (-3x4 + 5x5 - 5)
A. 3x5 + 24x4 - 20 B. 3x5 + 22x4 - 10 C. 3x5 + 22x4 - 20 D. 15x9
Solve the problem.The demand equation for a certain product is P = 55 - 0.001x, where x is the number of units sold per week and P is the price in dollars at which one is sold. The weekly revenue R is given by 
What number of units sold produces a weekly revenue of $90,000?
A. 1590 or 53,312 B. 53,312 C. 1688 or 53,312 D. 1688
Consider the problem 
, 
, 
,
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. Replace 
with a central difference approximation with 
and with a central difference approximation with 
. The resulting equation is
Select the correct answer.
?
A. 
B. 
C. 
D. 
E. 