The quantity demanded for a certain brand of portable CD players is 200 units when the unit price is set at $90. The quantity demanded is 1,200 units when the unit price is $40. Find the demand equation
a. p = - 0.05x + 90
b. p = - 0.04x + 100
c. p = - 0.04x + 90
d. p = - 0.05x + 100
d. p = - 0.05x + 100
Mathematics
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Determine the domain and range of the function.g(x) = 5x2 + 40x + 71
A. Domain: (-?, ?) Range: (-?, -4] B. Domain: (-?, ?) Range: [-9, ?) C. Domain: [-9, ?) Range: (-?, ?) D. Domain: (-?, -4] Range: [-9, ?)
Mathematics
Expand the number to its natural form.4.07 × 10-4
A. 0.0000407 B. 0.00407 C. 0.0407 D. 0.000407
Mathematics
Solve the logarithmic equation. Give an exact answer.ln 7 + ln(x - 1) = 0
A. 
B. 
C. 
D. {1}
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.
- 
A. 8x
B. 
C. 
D. 0
Mathematics