Perform the indicated operation.-23 + (-4)
A. -19
B. -27
C. 19
D. 27
Answer: B
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Translate the situation into mathematical language. You need not actually solve the problem.The Music Store prices its blank audiotapes by raising the wholesale price 30% and adding 30 cents. What must the tape's wholesale price be if the tape is to sell for $2.19?
A. Let w represent the tape's wholesale price; 0.30 = w + 0.30w - 2.19 B. Let w represent the tape's wholesale price; 2.19 = w + 0.30w + 0.30 C. Let w represent the tape's wholesale price; 2.19 = w + 0.30w - 0.30 D. Let w represent the tape's wholesale price; 2.19 = 0.30w + 0.30
Solve the problem.There are currently 60 million cars in a certain country, decreasing by 4.3% annually. How many years will it take for this country to have 31 million cars? (Round to the nearest year.)
A. 2 years B. 16 year(s) C. 7 year(s) D. 78 years
Multiply.(3x + 4)(3x + 4)(3x + 4)
A. 9x2 + 24x + 16 B. 9x6 + 12x3 + 4096 C. 27x3 + 108x2 + 144x + 64 D. 27x3 + 108x2 + 108x + 64
Solve the problem.It can be shown that if the angle of elevation from an observer to the top of an object is A and the angle of elevation d ft closer is B, then the height of the object is given by h = 
ft.Find A if 
and 
Give your answer in degrees to the nearest hundredth.
A. 51.51° B. 55.72° C. 46.34° D. 39.97°