Use the fundamental identities to simplify the expression.cos (-x) cos x - sin (-x) sin x
A. cos2x sin2x
B. 1
C. 0
D. 2
Answer: B
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Solve the problem.David's company has to ship 4950 boxes of sprinklers. If a truck can hold 550 boxes, how many truckloads does he need to ship all the boxes?
A. 7 truckloads B. 9 truckloads C. 8 truckloads D. 10 truckloads
Translate the phrase to an algebraic expression.four subtracted from eleven times a number
A. 11x - 4 B. 11 - x + 4 C. 4 - 11x D. 4 + 11x
Solve the problem.Alex has saved $770 at the bank. He wants to accumulate $1750 for a trip to soccer camp. What percent of his goal has been reached?
A. 44% B. 0.44% C. 20% D. 2%
Fill in the digits for the given place values in the following whole number.8,352,642,148billions: millions:
A. Billions: 2, millions: 5 B. Billions: 3, millions: 2 C. Billions: 8, millions: 2 D. Billions: 2, millions: 6