Solve the system by the addition method.y = x2 + 4y = -x2 + 6
A. {(1, 5), (1, -5), (-1, 5), (-1, -5)}
B. {(5, 1), (5, -1)}
C. {(1, 5), (1, -5)}
D. {(1, 5), (-1, 5)}
Answer: D
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A school is taking a busload of students to a music camp. It costs $199.00 to operate the bus, and the school pays $40.00 per student for use of camp facilities.
?
A: Find a formula that gives total cost 
, in dollars, of taking 
students to the camp.
?
B: What is the cost of taking 36 students to music camp?
?
C: Solve the equation 
for 
, and explain what the solution represents.
What will be an ideal response?
Solve the problem.The area A = ?r2 of a circular oil spill changes with the radius. At what rate does the area change with respect to the radius when 
A. 9? ft2/ft B. 3? ft2/ft C. 6? ft2/ft D. 6 ft2/ft
Starting in the year 2000, the number of crimes committed each year in Middletown is predicted to grow according to a linear growth model. During the year 2000, Middletown recorded 2 crimes (P0 = 2). During the year 2001, Middletown recorded 6 crimes (P1 = 6).If PN denotes the predicted number of crimes during the year 2000 + N, then
A. PN = 4N + 2. B. PN = N2 + N. C. PN = 4N - 2. D. PN = 2N + 4. E. none of these
Write the word phrase as an algebraic expression. Use x to represent the unknown number in the phrase.the sum of 16 and triple a number, divided by the sum of the number and 7
A. 16 + 
B. 
C. 
D. 
+ 3x