![]() It seems that the minimum value would be $0$ though. ![]() I have no idea how to set up an equation to solve for the max value. ![]() Now finding the range of valid values for the amount of cement is where I feel completely clueless. I know that the independent variable is typically plotted on the horizontal axis and it seems that the amount of Cement is a function of the amount of lumber so, I went ahead and said that the amount of Cement should be on the vertical axis. What is the range of valid values for the amount of cement? Potentially, mathematical variables can have any value, but the variables under discussion here are bounded by the real-world context they model. Which axis should represent the amount of cement? In high school, you might spend a year studying pre-calculus. To determine how to spend his budget, Bob graphs the amount of cement he can buy (in kilograms) as a function of the amount of lumber he buys (in square meters). Is Calculus 1 harder than precalculus Pre-calculus is the collection of topics you study before learning calculus. Cement costs $10$ cents per kilogram, and a $10$ centimeter thick board of lumber costs $3$ dollars per square meter. ![]() Bob has budgeted $5000$ dollars for home renovations. ![]()
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