Perform the indicated operation and, if possible, simplify. Assume that all variables represent positive real numbers. 
+
A. 5x
+ y3
B. (5x + y9)
C. (5x + y3)
D. (5x3 + y3)
Answer: C
Mathematics
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Add.
A. 1,318 B. 1,018 C. 1,320 D. 1,220
Mathematics
Perform the indicated operations. Write the result using only positive exponents. Assume all variables represent nonzero real numbers.
A. 
B. x16
C. -x16
D. 
Mathematics
Answer the question.Which number is larger?
A. 
B. 0.64
Mathematics
Solve the problem.In a school survey, students showed these preferences for instructional materials. Answer the question. 
About how many students would you expect to prefer computers in a school of 850 students?
A. About 170 students B. About 36 students C. About 306 students D. About 153 students
Mathematics