Solve the problem.Jay drove 300 kilometers at the average rate of 75 kilometers per hour. How long did the trip take?
A. 5 hr
B. 3 hr
C. 4 hr
D. 
hr
Answer: C
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Use the product-to-sum formulas to rewrite the expression as the sum or difference of two functions.sin 
? sin 
?
A. 
cos 
? - 
cos 
?
B. 
sin 
? - 
sin 
?
C. 
sin 
? + 
sin 
?
D. 
cos 
? + 
cos 
?
To study the effect of fluoride in preventing tooth decay, researchers counted the number of fillings in the teeth of 28 patients and recorded these results: ? 5, 7, 16, 21, 16, 23, 17, 8, 12, 3, 9, 2, 8, 17, 12, 19, 14, 10, 13, 8, 14, 15, 14, 14, 6, 10, 12, 11 ? Create a table to tally the results. ?
A. Number of fillings Frequency1-5 36-10 911-15 1216-20 721-25 2 B. Number of fillings Frequency1-5 26-10 811-15 1216-20 521-25 2 C. Number of fillings Frequency1-5 36-10 811-15 1216-20 521-25 1 D. Number of fillings Frequency1-5 126-10 911-15 1216-20 721-25 3 E. Number of fillings Frequency1-5 36-10 811-15 1016-20 521-25 2
What construction can be performed to find the locus of points equidistant from the sides of 
?
What will be an ideal response?
Find an equation for the line tangent to the graph of the given function at the indicated point.f(x) = 
at (4, 4)
A. y = 8 - 4 B. y = 2x + 4 C. y = 2x - 8 D. y = 2x - 4