Multiply and simplify.
? 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Use modular arithmetic to find the answer.Find all x such that x ? 0 (mod 5).
A. x = 5 B. x = 6k, k is an integer C. x = 5k, k is an integer D. x = 7k, k is an integer
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Determine if the given value of the variable is a solution to the equation.
= 20 + x; 15
A. not a solution B. solution
Mathematics
Fill in the blank with < or >.4.1 
4.3
A. < B. >
Mathematics
Solve the problem.Jim has gotten scores of 78 and 69 on his first two tests. What score must he get on his third test to keep an average of 70 or greater?
A. At least 62 B. At least 63 C. At least 73.5 D. At least 72.3
Mathematics