A 30-foot ladder is leaning against a house (see figure). If the base of the ladder is pulled away from the house at a rate of 2 feet per second, the top will move down the wall at a rate of 
ft/sec, where x is the distance between the base of the ladder and the house. Find the limit of r as 
varid="variable_id_field" variablename="impvar_558a581f083846d5918cf946a" />.
?
?
A. 
B. 60
C. 0
D. 
E. 30
Answer: D
Mathematics
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? A when A is negative.
What will be an ideal response?
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Find the exact value without using a calculator. cos 
A. 
B. - 
C. - 
D. undefined
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Use the power rules for exponents to simplify. Write the answer in exponential form.(2x3y2)3
A. 8x6y5 B. 8x9y6 C. 2x6y5 D. 2x9y6
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Use the chart below to answer the question. 
Matt has a budget of $2199. Can he afford to buy the computer for $799 with options (d), (f), and (h)?
A. Yes B. No
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