Solve the problem.An economist predicts that the buying power B(x) of a dollar x years from now will decrease according to the formula B(x) = 0.61x. How much will today's dollar be worth in 7 years? Round the answer to the nearest cent.
A. $0.03
B. $4.27
C. $3.28
D. $0.71
Answer: A
Mathematics
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Express the number in scientific notation.2500
A. 2.5 × 10-2 B. 2.5 × 10-3 C. 2.5 × 103 D. 2.5 × 102
Mathematics
Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = -2(x + 1)2 - 3
A. 
B. 
C. 
D. 
Mathematics
Solve.Five divided by the difference of a number and 9 equals the quotient of 10 and the sum of the number and 3. Find the number.
A. 
B. -15
C. 7
D. 21
Mathematics
Verify the identity.
= 
What will be an ideal response?
Mathematics