Betty Jo bought a new car and the sales tax of 14% of the cost of her car was added to the purchase price of $28,500.
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C) a) $3990; b) $32,490
Mathematics
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Find Dxy.y = (x2 + 5x) tanh-1 (x + 4)
A. (2x + 5) - 
B. (2x + 5) tanh-1 (x + 4) - 
C. (2x + 5) tanh-1 (x + 4) - 
D. - 
Mathematics
Write the quotient in standard form.
A. 5 - 8i B. -8 - 5i C. -8 + 5i D. 288 - 180i
Mathematics
Solve the problem.The temperature of water in a certain lake on a day in October can be determined by using the model 
where x is the number of feet down from the surface of the lake and y is the Celsius temperature of the water at that depth. Based on this model, how deep in the lake is the water 13 degrees? (Round to the nearest foot.)
A. 60 ft B. 4 ft C. 23 ft D. 53 ft
Mathematics
Find the sum.7 + [7 + (-20)]
A. -20 B. 34 C. -6 D. 20
Mathematics