Solve the problem.Roberto invested some money at 8%, and then invested $2000 more than twice this amount at 10%. His total annual income from the two investments was $3000. How much did he invest at 10%?
A. $22,000
B. $20,000
C. $6000
D. $2200
Answer: A
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Provide an appropriate response.The demand function for a certain product is given by: p = 
, where p is the price and q is the quantity demanded.(a)Find the values of q for which p > 0.(b)Find the values of q for which p < 0.(c)What do the results of (a) and (b) mean and why does this make sense?
What will be an ideal response?
Determine whether the given ordered pair is a solution of the system.(3, -2)x + y = 1x - y = 5
A. solution B. not a solution
Find the grade point average for a student earning the following grades. Assume 
and 
Round answer to the nearest hundredth.
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A. 12.00
B. 3.27
C. 3.60
D. 2.27
Use the laws of exponents to simplify. Do not use negative exponents in your answer.6-6 ? 69
A. 3654 B. 6-54 C. 63 D. 363