The Falls Incline Railway in Niagara Falls, Ontario, Canada is an inclined railway that was designed to carry people from the City of Niagara Falls to Queen Victoria Park. The railway is approximately 180 feet long with a 42% uphill grade (see figure). Select the graph of the equation of the line that models the railway track.
?
?
?
A. ?
B. ?
C.
D. ?
E. ?
Answer: A
Mathematics
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Factor by grouping.xy + y + 8x + 8
A. (x + 1)(y + 8) B. (x + 1)(8y + 8) C. (8x + 8)(y + 1) D. (x + 8)(y + 1)
Mathematics
The rectangular coordinates of a point are given. Express the point in polar coordinates with 
and 
(0, -4)
A. (4, 90°) B. (4, 0°) C. (4, 270°) D. (4, 180°)
Mathematics
Solve the problem. Write all linear equations in slope-intercept form.In a lab experiment 3 grams of acid were produced in 17 minutes and 18 grams in 45 minutes. Find a linear equation that models the number of grams produced in x minutes.
A. y = 
x - 
B. y = x + 14
C. y = 
x - 
D. y = 
x + 
Mathematics
Solve.(7x - 13)(7x - 1) = 0
A. 
, 
B. 
, 
C. 
, 
D. - 
, - 
Mathematics