Use a graphing calculator to solve the system of equations. Round your solutions to one decimal place.2.4x + 19.9y - 4.0z = 3.05.9x - 7.0y - 0.3z = -2.24.5x - 2.6y + 0.3z = 9.9
A. {(-6.6, -5.2, -27.9)}
B. {(2.7, 2.1, 11.2)}
C. {(4.0, 3.1, 16.7)}
D. {(10.9, 8.5, 45.7)}
Answer: B
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Solve the problem.Suppose the sales of a particular brand of appliance satisfy the relationship S(x) = 200x + 2600, where S(x) represents the number of sales in year x, with x = 0 corresponding to 1982. In what year would the sales be 4800?
A. 1995 B. 1996 C. 1993 D. 1990
Provide an appropriate response.Explain why if n is odd, x1/n is defined even if x is negative.
What will be an ideal response?
Solve the problem.Use the formula N = Iekt, where N is the population at time t, I is the initial population, and k is a growth constant equal to the percent of growth (expressed in decimal form) per unit of time. How long will it take for the population of a certain country to double if its annual growth rate is 3.5%? Round your answer to the nearest year.
A. 57 yr B. 9 yr C. 20 yr D. 1 yr
Rewrite the given expression as a single logarithm. Assume that all variables are defined in such a way that variable expressions are positive and bases are positive numbers not equal to 1.logt 6 + logt s
A. logt 
B. logt 6 ? logt s
C. logt (6 + s)
D. logt 6s