Classify the real number as one or more of the following: natural number, whole number, integer, rational number, or irrational number.3
A. rational number
B. rational number, whole number, integer
C. irrational number
D. natural number, rational number
Answer: A
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Solve the equation.
- 
= 4
A. r = 
B. r = 
C. r = 
D. r = 
Given the function f, match the function g with a transformation of f.f(x) = x2 - 5, g(x) = 4x2 - 20
A. f(x + 4) B. 4f(x) C. f(x) + 4 D. f(4x)
Graph. Label any intercepts and determine the slope of the line. If the slope is undefined, state this.x = -7
A. x-intercept: (-7, 0), m: - 
B. x-intercept: (0, -7), m: 0
C. x-intercept: (0, 0), m: -7
D. x-intercept: (-7, 0), m: undefined
Solve the problem.The temperature of water in a certain lake on a day in October can be determined by using the model 
where x is the number of feet down from the surface of the lake and y is the Celsius temperature of the water at that depth. Based on this model, how deep in the lake is the water 9 degrees? (Round to the nearest foot.)
A. 67 B. 12 C. 45 D. 30