Solve the problem.Jim has gotten scores of 60 and 97 on his first two tests. What score must he get on his third test to keep an average of 85 or better?
A. at least 80
B. at least 96
C. at least 98
D. at least 78.5
Answer: C
Mathematics
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Use the given transformation to evaluate the integral. src="https://sciemce.com/media/4/ppg__as0610191830__f1q59g7.jpg" alt="" style="vertical-align: -4.0px;" /> 
Rwhere R is the parallelepiped bounded by the planes 
A. 7,497
B. 
C. 3,332
D. 833
Mathematics
Factor by grouping.5y - 35 + xy - 7x
A. (x - 7)(y + 5) B. (y - 7)(5 + x) C. (x - 7)(5y + x) D. (y - 7x)(5 + x)
Mathematics
Solve the problem.Find the length of the unknown leg of the right triangle shown. Give an exact answer. 
A. 20 in. B. in.19 C. 16 in. D. 14 in.
Mathematics
Combine like terms.-3b + 9b
A. 6b2 B. -6b C. 6b D. -12b
Mathematics