Simplify.
÷ 
? 
A. 
B. 16
C. 
D. 
Answer: C
Mathematics
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Multiply using the rule for finding the product of the sum and difference of two terms.(x2 + 7)(x2 - 7)
A. x4 - 14 B. x4 - 49 C. x4 + 14x2 - 49 D. x4 - 14x2 - 49
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Give the appropriate counting number answer to the problem.Each gallon of shingle stain covers 120 square feet. How many gallons should you buy to cover 902 square feet?
A. 7 B. 8 C. 9 D. 6
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Without graphing the function, determine its amplitude or period as requested.y = 
cos 
Find the period.
A. 
B. 
C. 
D. 
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Find the exact value of the expression.cos 25° cos 35° - sin 25° sin 35°
A. 
B. 
C. 
D. 
Mathematics