The power, in watts, dissipated as heat in a resistor varies directly with the square of the voltage and inversely with the resistance. If 90 volts are placed across a 90-ohm resistor, it will dissipate 90 watts. What voltage across a 10-ohm resistor will dissipate 490 watts?
?
__________ volts
Fill in the blank(s) with the appropriate word(s).
70
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Find three ordered pairs that are solutions of the given linear equation, and use them to graph the equation.y = 3x
A. 
B. 
C. 
D. 
Solve the problem.Anne and Nancy use a metal alloy that is 14% copper to make jewelry. How many ounces of an alloy that is 11% copper must be mixed with an alloy that is 16% copper to form 125 ounces of the desired alloy?
A. 50 ounces B. 75 ounces C. 80 ounces D. 52 ounces
An undercover police officer is assigned the job of once a night walking each of the 48 blocks of a certain section of town described by the street grid shown below. The walk starts and ends at A. The officer wants to minimize the total number of blocks he has to walk each night.
How many vertices of odd degree are there in the graph representing this problem?
A. 24 B. 20 C. 22 D. 18 E. none of these
Simplify.5 - 12 + 3
A. -10 B. -31 C. -4 D. -180