Multiply the polynomials. Express the answer as a single polynomial in standard form.(7x + 8y)2
A. 7x2 + 112xy + 64y2
B. 49x2 + 112xy + 64y2
C. 7x2 + 64y2
D. 49x2 + 64y2
Answer: B
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Use elimination to determine whether the system of equations has no solutions, one solution, or infinitely many solutions.2x + 4y = 108x + 16y = 40
A. Infinitely many B. One C. No solutions
Provide an appropriate response.Perform the indicated operation, rationalize the denominator, and simplify if possible: 
Fill in the blank(s) with the appropriate word(s).
First, use front-end rounding to round each number and estimate the answer. Then, find the exact answer.Tran's subtotal at Scramble's Electronics is $344.83. The sales tax on these items is $20.38. What was Tran's total bill?
A. Estimate: $280; exact: $324.45 B. Estimate: $300; exact: $365.21 C. Estimate: $320; exact: $365.21 D. Estimate: $365.21; exact: $365.21
Solve.m - 1 ? -5
A. m ? 4 B. m ? -4 C. m ? -6 D. m ? 6