Use a half-angle identity to find an exact value for the following, given the information about x. Find tan 
, given that sin x = - 
and 270° < x < 360°.
A. - 
B. 
C. - 
D. 
Answer: A
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Solve the problem.A gas station sells 4820 gallons of regular unleaded gasoline in a day when they charge $1.35 per gallon, whereas they sell 3938 gallons on a day that they charge $1.40 per gallon. Find a linear equation that relates gallons sold to price. Use this equation to predict the number of gallons sold at a price of $1.24 per gallon.
A. 6769.4 gallons B. 6764.5 gallons C. 6757.1 gallons D. 6760.4 gallons
Solve.A salesperson earned $350 a week plus a bonus of $19 for each service contract sold. If the pay one week was $502 how many service contracts were sold?
A. 5 contracts B. 18 contracts C. 2 contracts D. 8 contracts
Solve the problem.Determine whether a baseball hit 118 feet per second at an angle of 40° relative to level ground will clear a 10-foot wall 400 feet away.
A. No B. Yes
Use the horizontal line test to determine whether the function is one-to-one.
A. Yes B. No