Solve the problem.The sales tax rate in one state is 6.75%. How much tax will be charged on a purchase of 4 chairs at $52 apiece? Round your answer to the nearest cent.
A. $55.51
B. $140.40
C. $14.04
D. $3.51
Answer: C
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Solve the problem.An initial investment of $1000 is appreciated for 5 years in an account that earns 14% interest, compounded semiannually. Find the amount of money in the account at the end of the period.
A. $1925.41 B. $1838.46 C. $1967.15 D. $967.15
Simplify using order of operations.
A. -1940 B. -320 C. 320 D. 1940
Factor the trinomial completely. If the trinomial cannot be factored, say it is prime.12x2 - 40x + 4x3
A. (4x2 + 8x)(x - 5) B. 4x(x + 2)(x - 5) C. 4x(x - 2)(x + 5) D. (x - 2)(4x2 + 20)
Provide an appropriate response.A survey of the interest rates earned by Certificates of Deposit (CDs) showed the following percents for the length of time (in years) for holding the CD. Let length of time represent the independent variable and interest rate represent the dependent variable. Use a graphing utility to draw a scatter diagram and to find the line of best fit. What is the estimate of the interest rate for a CD held for 30 years (to the nearest thousandth)? 
A. 8.669 B. 8.874 C. 8.675 D. 9.064