To determine the total cost of apples based on the number of pounds \( x \), we can define a function \( f \) that multiplies the cost per pound by the number of pounds. Given that the cost per pound is $1.25, the function can be expressed as:
\[ f(x) = 1.25 \times x \]
Example Calculations:
- For \( x = 0 \): \[ f(0) = 1.25 \times 0 = 0 \]
- For \( x = 1 \): \[ f(1) = 1.25 \times 1 = 1.25 \]
- For \( x = 2 \): \[ f(2) = 1.25 \times 2 = 2.50 \]
- For \( x = 6 \): \[ f(6) = 1.25 \times 6 = 7.50 \]
- For \( x = 10 \): \[ f(10) = 1.25 \times 10 = 12.50 \]
General Function:
Thus, the function rule for the cost of apples is \[ f(x) = 1.25x \]
Summary of Costs:
- Number of pounds (x): 0, 1, 2, 6, 10
- Cost of apples (f):
- \( f(0) = 0 \)
- \( f(1) = 1.25 \)
- \( f(2) = 2.50 \)
- \( f(6) = 7.50 \)
- \( f(10) = 12.50 \)
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