Solve the problem. A foreign exchange student decided to purchase an international calling plan. The monthly cost of the plan is $19.99 plus $0.08 per minute. This can be modeled by the equation 
where C is the monthly cost and m is the number of minutes used each month. Graph this equation, assuming the student will not use more than 400 minutes in a month.Monthly Cost of Cell Phone Use
A.
| Monthly Cost of Cell Phone Use |
B.
| Monthly Cost of Cell Phone Use |
C.
| Monthly Cost of Cell Phone Use |
D.
| Monthly Cost of Cell Phone Use |
Answer: D
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Write both an improper fraction and a mixed number or whole number to represent the shaded portion.
A. 
, 1
B. 
, 
C. 
, 7
D. 
, 1
Match the given equation with one of the graphs.y2 - 16x2 = 64
A. 
B. 
C. 
D. 
Answer the question or provide the appropriate response.Which of the following methods may be used to show that there cannot be two real numbers that have a difference of 5 and a product of -25? (More than one method may be correct.)(i) Graph the function y = x2 - 5x + 25 and observe that the graph has no x-intercepts.(ii) Determine that the discriminant of the equation x2 - 5x + 25 = 0 is negative.(iii) Graph the function y = x2 - 5x + 25 and observe that the vertex lies above the x-axis.(iv) Graph the functions y1 = x2 - 5x and y2 = 25 and observe that these graphshave no points of intersection.
A. (i) only B. (i), (ii), (iv) C. (i), (ii), (iii), (iv) D. (i), (iv)
Express the sum using summation notation.35 + 45 + 55 + ... + 95
A. 
B. 
C. 
D. 