Simplify the expression.10x2 + x + 4x2 + 2x
A. 14x2 + 3
B. 28x2
C. 14x2 + 3x
D. 40x2 + 3x
Answer: C
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Solve the problem.A telephone costs $473. If the sales tax rate is 5%, how much tax is charged and what is the total price? Round your answers to the nearest cent.
A. $28.38, $501.38 B. $23.65, $496.65 C. $18.92, $491.92 D. $236.50, $709.50
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.
-2
A. 
B. 
C. 
D. 
Solve the system. If the system's equations are dependent or if there is no solution, state this.7x - 2y + 7z = 2-4x + 8y + 3z = -828x - 8y + 28z = 6
A. The equations are dependent. B. No solution C. (4, 4, -1) D. (2, -8, 6)
Solve the formula for the indicated variable.P = s1 + s2 + s3, for s2
A. s2 = s1 + P - s3 B. s2 = P - s1 - s3 C. s2 = P + s1 + s3 D. s2 = s1 + s3 - P