Set y = 0 and solve the resulting equation.
a. y = 9
b. y = 3
c. y = 1
d. y = 1, 9
e. y = -1, 3
a. y = 9
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9 is 25% of what number?
A. 12 B. 225 C. 2.25 D. 36
Solve.The voltage across a resistor is jointly proportional to the resistance of the resistor and the current flowing through the resistor. If the voltage across a resistor is 
for a resistor whose resistance is 
and when the current flowing through the resistor is 
find the voltage across a resistor whose resistance is 
and when the
current flowing through the resistor is 
A. 12 volts
B. 36 volts
C. 27 volts
D. 18 volts
The graphing calculator screens show a system and the point of intersection. Choose the screen which best represents the given system.3y + 3 = 2xy = -3
A. 
B. 
C. 
D. 
Rewrite the given expression as a single logarithm. Assume that all variables are defined in such a way that variable expressions are positive and bases are positive numbers not equal to 1.log713 - log7a
A. log7
B. log14
C. log7
D. log7(13 - a)