Use the discriminant to determine the number and type of solutions for the equation.x2 - 7x - 1 = 0
A. Two complex-number solutions
B. One real-number solution
C. Two real-number solutions
Answer: C
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Solve the problem.Does the graph of the function y = tan x - x have any horizontal tangents in the interval 
If so, where?
A. No
B. Yes, at x = ?
C. Yes, at x = 0, x = ?, x = 2?
D. Yes, at x = 
, x = 
Provide the proper response.True or false? 
= A if A is negative.
Fill in the blank(s) with the appropriate word(s).
Solve the problem.Vicki's car rental company charges $20 per day plus $0.25 per mile to rent a car. Joshua's rental company charges $26 per day plus $0.20 per mile. The total daily cost, y, in dollars, of renting the car if x miles are driven can be modeled by the linear system: y = 0.25x + 20 Vicki's y = 0.20x + 26 Joshua's Graph the system. What is the x-coordinate of the intersection point of the graphs? Describe what this x-coordinate means in practical terms. 
A. 50; Both companies charge the same amount for 50 miles driven. B. 100; Both companies charge the same amount for 100 miles driven. C. 120; Both companies charge the same amount for 120 miles driven. D. 55; Both companies charge the same amount for 55 miles driven.
Write the series using summation notation.110 + 210 + 310 + 410 + . . .
A. 
B. 
C. 
D. 