Practice Word Problems (9) - Linear Functions - IB 10 Mathematics – Group 5, Algebra
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Word Problems

Practice - Word Problems

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Practice Questions

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Question 1 Easy

Write the equation for a plant that grows 4 cm per day, starting from 6 cm tall.

💡 Hint: Think about the starting height and the rate of growth.

Question 2 Easy

If a gym charges $40 per month plus $0.10 for every hour of class, express this as a function.

💡 Hint: Identify the fixed cost and variable cost.

4 more questions available

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Question 1

What is the equation of a linear function representing a mobile plan charging $10 plus $0.05 per text?

A. C(x) = 0.05x + 10
B. C(x) = 10 - 0.05x
C. C(x) = 10 + 0.05

💡 Hint: Look for the fixed fee and the cost associated with the variable.

Question 2

A plant grows according to the equation H(x) = 2x + 1. What does the 1 represent?

True
False

💡 Hint: Focus on the intercept of the graph.

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Challenge Problems

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Challenge 1 Hard

If a freight service has a base charge of $80 plus $3 per mile, write the function and find the cost for 50 miles.

💡 Hint: Identify the base charge and consider how the cost varies with distance.

Challenge 2 Hard

A bookstore sells books for $15 each and has a special membership fee of $20. How would you express the total cost for x books?

💡 Hint: Think about the total cost combining fixed and variable expenses.

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