Use the graph to complete the identity.cos 3x cos 6x + sin 3x sin 6x = ?
A. y = sin 9x
B. y = sin 3x
C. y = cos 9x
D. y = cos 3x
Answer: D
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Solve.Madison, Lionel, and Steven enter a 51.4-mile bicycle team relay race. They complete the course in 2.27 hours. What was their average speed on the course? (Round to the nearest tenth.)
A. 2.3 mi/hr B. 0.0 mi/hr C. 22.6 mi/hr D. 0.4 mi/hr
Simplify.-
A. Not a real number B. -4 C. -5 D. -8
Solve the problem.Don runs a charity fruit sale, selling boxes of oranges for $11 and boxes of grapefruit for $10. If he sold a total of 762 boxes and took in $8125 in all, then how many boxes of oranges did he sell?
A. 383 boxes B. 505 boxes C. 257 boxes D. 458 boxes
Give a verbal representation of f(x).f(x) = 3x
A. Subtract 3 from the input x to obtain the output y. B. Multiply the input x by 3 to obtain the output y. C. Divide the input x by 3 to obtain the output y. D. Add 3 to the input x to obtain the output y.