Math 1 Final Review

A climber is on a hike. After 2 hours, he is at an altitude of 400 feet. After 6 hours, he is at an altitude of 700 feet. What is the average rate of change? 

• 200
• 150
• 300
• 75

Which or the following is NOT discrete data?

• There average lifespan of a human being is 79 years in USA
• The possible outcomes of rolling a die.
• The number of languages spoken in Irvine.
• Mrs. Moline has between 30 to 35 students per class.  

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

A new savings account is opened with $400 and gains 3% every year. What is the function?

• f(x)=400(.03)x
• f(x)=400(.97)^x
• f(x)=400(1.03)^x
• f(x)=400(0.03)^x

The value of a car is $15,000 and depreciates at a rate of 8% per year. What is the equation?

• y=15,000-0.08x
• y=15,000(1.08)^x
• y=15,000(0.92)^x
• y=15,000(0.08)^x

Identify the slope, intercepts, and whether the line is increasing or decreasing. 

• Slope = 3
  X-intercept = (0, -1)
  Y-intercept = (2, 0)
  Increasing
• Slope = -3
  X-intercept = (2, 0)
  Y-intercept = (0, -1)
  Increasing
• Slope = 3
  X-intercept = (0, 2)
  Y-intercept = (-1, 0)
  Increasing
• Slope = 3
  X-intercept = (-1, 0)
  Y-intercept = (0, 2)
  Increasing

What type of function is present? 

• linear
• exponential decay
• exponential growth
• non-function

When is the velocity decreasing?

• 0 < t < 60
• 40 < t < 60
• 15 < t < 40
• -40 < t < 0

Solve the equation for the lower case b.

• b = (2A)/h - B
• b = (2A/h - B)
• b = (2h - A)/B
• b = 2Bh/A

Solve for k. 5−3k≤−7−k

• k ≥ 6
• k ≥ −1
• k ≤ −1
• k ≤ 6