Complete the equation so the result is an identity. 
- 1 = tan2x
A. cos2x
B. sin2x
C. cot2x
D. sec2x
Answer: D
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Solve the rational equation.
+ 
= 
A. {56} B. {0} C. {40} D. {280}
Solve the problem.At a local grocery store the demand for ground beef is approximately 50 pounds per week when the price per pound is $4, but is only 40 pounds per week when the price rises to $5.50 per pound. Assuming a linear relationship between the demand x and the price per pound p, express the price as a function of demand. Use this model to predict the demand if the price rises to $5.80 per pound.
A. p = 0.15x + 11.5; 38 pounds B. p = 11.5x + -0.15; 40 pounds C. p = - 0.15x + 11.5; 38 pounds D. p = - 0.15x - 11.5; 40 pounds
Find the indicated matrix.Let A = 
and B = 
. Find AB.
A. 
B. 
C. 
D. 
Solve the problem.A woman has $1.70 in dimes and nickels. She has 5 more dimes than nickels. How many nickels does she have?
A. 18 nickels B. 13 nickels C. 8 nickels D. 3 nickels