Compute the product.
A. 
B. 
C. 
D. 
Answer: D
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Replace the polar equation with an equivalent Cartesian equation.r cos ? = 5
A. 5x = 1 B. x = 5 C. 5y = 1 D. y = 5
Graph the system of inequalities.3x + 2y ? -6 x - 1 ? 0
A. 
B. 
C. 
D. 
Solve the problem.The loudness L of a sound of intensity I is defined as ?
where L = the loudness of the sound as measured in decibels and I0 = the minimum intensity detectable by the human ear. Find L for a sound whose intensity, I, is 105.4 I0.
A. 496.8 decibels B. 0.7 decibels C. 124.3 decibels D. 54 decibels
Solve.Sue buys a house which has a rectangular yard measuring 15.2 meters by 10.6 meters. In one corner of the yard is a rectangular shed measuring 3.9 meters by 2.2 meters. Sue intends to grow grass in the whole of the yard. What is the area of the yard excluding the shed?
A. 161.12 m2 B. 3.9 m2 C. 1525.4 m2 D. 152.54 m2