Find the period of the function. y = -3 cos x
A. 
B. 2?
C. ?
D. 3
Answer: B
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Design a sine function with the given properties.It has a period of 12 hr with a minimum value of -9 at t = 3 hr and a maximum value of 3 at 
A. 6 sin
+ 3
B. 12 sin
- 3
C. 12 sin
- 9
D. 6 sin
- 3
Calculate the current ratio and the acid-test ratio. Is the company healthy based on the guidelines given in the text?Current assets: $418,000Current liabilities: $187,000Liquid assets: $47,000
A. Current ratio = 8.89 which is fine Acid-test ratio = 0.25 which is very low B. Current ratio = 0.25 which is very low Acid-test ratio = 2.24 which is fine C. Current ratio = 2.24 which is fine Acid-test ratio = 0.25 which is very low D. Current ratio = 2.24 which is fine Acid-test ratio = 8.89 which is fine
Solve the problem.A chemist needs 50 milliliters of a 67% solution but has only 61% and 76% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.
A. 20 mL of 61%; 30 mL of 76% B. 33 mL of 61%; 20 mL of 76% C. 33 mL of 61%; 17 mL of 76% D. 30 mL of 61%; 20 mL of 76%
Perform the indicated operation.(m + 12)(-4m - 2)
A. -4m2 - 24m - 50 B. -4m2 - 50m - 24 C. -4m2 - 50m - 50 D. -4m2 - 52m - 24