Solve the equation.3(5x + 5) + 2(-2 + 8x) = 6(5x - 5) - 6
A. {5}
B. {-25}
C. {0}
D. {-47}
Answer: D
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Find AV at fCO when Vin = 30 mV and VO = 12 V at the mid frequency.
a. 49 dB b. 52 dB c. 61 dB d. 74 dB e. 95 dB
Solve.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
where c is cost and x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 72 watches B. 30 watches C. 36 watches D. 27 watches
Multiply.(x + 7)(x - 7)
A. x2 - 14 B. x2 - 14x - 49 C. x2 - 49 D. x2 + 14x - 49
Provide an appropriate response.A student has a demand equation and a selling price. What kind of surplus can the student calculate with this information?
A. The consumers' surplus B. The producers' surplus C. Both the consumers' and producers' surpluses