Solve the problem.On part of a scenic tour of underground caves, Dave and Neil started at an elevation of - 39 feet. They then rose 19 feet. What was their elevation at this point?
A. -20 ft.
B. 20 ft.
C. -58 ft.
D. 58 ft.
Answer: A
Mathematics
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Find the x-intercepts for the parabola whose equation is given. If the x-intercepts are irrational, round your answers to the nearest tenth.y = x2 - 5x + 1
A. x-intercepts: (-1, 0) and (5, 0)
B. x-intercepts: none
C. x-intercepts: 
D. x-intercepts: 
Mathematics
Find the slope and an equation of the tangent line to the graph of the function f at the specified point.
?
What will be an ideal response?
Mathematics
y?? ? 3y? ?10y = 0
What will be an ideal response?
Mathematics
Find the length of the latus rectum of the parabola.Focus: (2, 0); vertex (8, 0).
A. 
B. 6
C. 24
D. 12
Mathematics