Graph the quadratic equation. Determine the x-intercepts, if they exist. Identify the vertex and axis of symmetry.y = x2 + 4x - 7
A. vertex: (- 
, - 
)
x-intercepts: (-4, 0) and (3, 0)
B. vertex: (4, 0)
x-intercept: (4, 0)
C. vertex: (-2, -11)
x-intercepts: (-2 ± 
, 0)
D. vertex: (-2, 3)
x-intercepts: none
Answer: C
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In a statistics class, 12 students have brown color eyes, 4 have blue eyes, 8 have hazel, and 2 green. What is the mode for this set of data?
A. 6.5 B. brown C. 12 D. none
Find the inverse of the one-to-one function.f(x) = -8x
A. f-1(x) = 
B. f-1(x) = 
x
C. f-1(x) = 8x
D. f-1(x) = - 
x
Solve the problem.Two cars start from the same point and travel in the same direction. If one car is traveling 60 miles per hour and the other car is traveling at 53 miles per hour, how far apart will they be after 9.4 hours?
A. 564 mi B. 1062.2 mi C. 498.2 mi D. 65.8 mi
Solve the problem.At $12 per ticket, the Casper Coyotes will fill all 6000 seats in the assembly hall. The manager knows that for every $1 increase in the price, 300 tickets will go unsold. Write the number of tickets sold, n, as a function of the ticket price, p. How much money will be taken in if the tickets are $21 each?
A. n(p) = -300p - 6360, -$12,660 B. n(p) = 600p + 4200; $16,800 C. n(p) = -300p + 9600; $3300 D. n(p) = -600p - 15,600; -$28,200