Change the sign. (Find the opposite, or additive inverse.) 3
A. 
B. 
C. 3
D. -3
Answer: D
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Solve the problem.A cashier has a total of 124 bills, made up of fives and tens. The total value of the money is $920. How many ten-dollar bills does the cashier have?
A. 90 ten-dollar bills B. 60 ten-dollar bills C. 30 ten-dollar bills D. 64 ten-dollar bills
Use a vertical format to find the product.7y2 - 7y + 6
A. -14y3 - 84y2 + 12y B. -14y3 + 14y2 - 12y C. 35y3 + 14y2 - 19y - 42 D. 35y3 - 84y2 + 79y - 42
Use Gauss-Jordan elimination to solve the linear system and determine whether the system has a unique solution, no solution, or infinitely many solutions. If the system has infinitely many solutions, describe the solution as an ordered triple involving variable z.x + y + z= 7x - y + 2z=72x + 3z=14
A. 
B. 
C. 
D. 
Solve the logarithmic equation. Give an exact answer.log2 4 - log2 x = 4
A. 
B. 
C. 
D. 