Solve the problem.An experimental model for a suspension bridge is built in the shape of a parabolic arch. In one section, cable runs from the top of one tower down to the roadway, just touching it there, and up again to the top of a second tower. The towers stand 40 inches apart. At a point between the towers and 10 inches along the road from the base of one tower, the cable is 1 inches above the roadway. Find the height of the towers.
A. 4.5 in.
B. 6 in.
C. 3.5 in.
D. 4 in.
Answer: D
Mathematics
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Graph the inverse of the function plotted, on the same set of axes. Use a dashed curve for the inverse.
A. 
B. 
C. 
D. 
Mathematics
Make a numerical representation (table) of f for x = -2, -1, . . . , 2 then graph the function. Round table values to the nearest hundredth when necessary.f(x) = 
x - 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The following scatter diagram shows heights (in inches) of children and their ages.Height (inches)
Age (years)What is the expected height range for a 2-year old child?
A. 25-38 inches B. 35-45 inches C. 40-50 inches D. 20-30 inches
Mathematics
Write an equation for the line described. Give your answer in slope-intercept form. m = 
, through (4, -5)
A. y = 
x - 
B. y = - 
x + 
C. y = 
x + 
D. y = 
x - 
Mathematics