Problem 1 :
If f(x) = x + 7 and g(x) = 7x, find the value of the following :
4f(2) − g(2)
A) -5
B) 1
C) 22
D) 28
Solution :
Problem 2 :
The y-intercept of the graph of y = -6x - 32 in the xy-plane is (0, y). What is the value of y?
Solution :
Problem 3 :
The graph of the function f, where y = f(x), models the total cost y, in dollars, for a certain video game system and x games. What is the best interpretation of the slope of the graph in this context?
A) Each game costs $25.
B) The video game system costs $100.
C) The video game system costs $25.
D) Each game costs $100.
Solution :
Problem 4 :
y < -4x + 4
Which point (x, y) is a solution to the given inequality in the xy-plane?
A) (2, -1)
B) (2, 1)
C) (0, 5)
D) (-4, 0)
Solution :
Problem 5 :
Figure A and figure B are both regular polygons. The sum of the perimeter of figure A and the perimeter of figure B is 63 inches. The equation 3x + 6y = 63 represents this situation, where x is the number of sides of figure A and y is the number of sides of figure B. Which statement is the best interpretation of 6 in this context?
A) Each side of figure B has a length of 6 inches.
B) The number of sides of figure B is 6.
C) Each side of figure A has a length of 6 inches.
D) The number of sides of figure A is 6.
Solution :
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