Determine if the given polar coordinates represent the same point.(5, ?/4), (-5, -?/4)
A. No
B. Yes
Answer: A
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Find the best buy (based on cost per unit).There are 3 available long distance calling cards. ABC Phone charges $.01 per minute and a $0.50 connection charge.Bozo's Telecom charges $.025 per minute and a $0.15 connection charge.BT&T charges $.06 per minute and no connection charge.Which company has the best buy for a 15 minute phone call?
A. Bozo's Telecom B. BT&T C. ABC Phone D. Not enough information
Find the relative maximum and minimum values of 
What will be an ideal response?
Solve the problem.A study was conducted to compare the average time spent in the lab each week versus course grade for computer students. The results are recorded in the table below. By using linear regression, the following equation is obtained: 
where x is the number of hours spent in the lab and y is grade on the test. Use this equation to predict the grade of a student who spends 8 hours in the lab. Number of hours spent in lab Grade (percent) 10 96 11 51 16 62 9 58 7 89 15 81 16 46 10 51
A. 80.6 B. 73.7 C. 69.7 D. 75.3
Solve the problem.Ohm's law relates the current in a circuit, I, in amperes, the voltage of the circuit, V, in volts, and the impedance of the circuit, Z, in ohms, by the formula 
Find the current I when the impedance is and voltage is V = -3i volts.
A. 
amperes
B. 
amperes
C. 
amperes
D. (-9 + 3i) amperes