Solve the problem using your calculator.The paired data below consist of the costs of advertising (in thousands of dollars) and the number of products sold (in thousands). Use a graphing calculator to model the data with a linear function that predicts the number of products sold as a function of the cost of advertising.
A. y = 55.8 + 2.79x
B. y = 26.4 + 1.42x
C. y = 55.8 - 2.79x
D. y = -26.4 - 1.42x
Answer: A
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Find the derivative.s = t3 tan t - 
A. 
= - t3 sec2 t + 3t2 tan t + 
B. 
= t3 sec t tan t + 3t2 tan t - 
C. 
= t3 sec2 t + 3t2 tan t - 
D. 
= 3t2 sec2 t - 
Evaluate the determinant.
A. 0 B. 145 C. 17 D. - 145
Provide an appropriate response.Finish the statement with a correct response. To divide two fractions one needs to:
A. Add the numerators and factor the denominators. B. Add the numerators and multiply the denominators. C. Invert the second fraction (divisor) and multiply. D. Invert the second fraction (divisor), add the numerators and multiply the denominators.
Solve the system by substitution. If the system is inconsistent or has dependent equations, say so.y = - 
x-2x + 6y = 6
A. 
B. 
C. ?; inconsistent system
D. 