Find the slope of the line containing the two points.(-9, 3); (-9, 1)
A. 
B. -2
C. 0
D. undefined
Answer: D
Mathematics
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Without graphing the function, determine its amplitude or period as requested.y = 
cos 
Find the amplitude.
A. 
B. 
C. 
D. 
Mathematics
Find the domain and range of the inverse of the given function.f(x) = 
A. Domain and range: all real numbers B. Domain: [7, ?); range: [7, ?) C. Domain: [0, ?); range: [7, ?) D. Domain: [7, ?); range: [0, ?)
Mathematics
Solve.When driving from Canada to the U.S., the gas is listed in dollars/liter. If your car holds 18 gallons of gas, how many liters (L) can you put into it?
A. 18 L B. 68.22 L C. 72 L D. 4.75 L
Mathematics
Use the given information to find the exact value of the trigonometric expression.cos ? = - 
; 
< ? < ?
Find cos(2?).
A. - 
B. 
C. - 
D. 
Mathematics