Answer:
• Equation: y=3+0.75x
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• Graph: See the Graph below
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• 4 toppings
Explanation:
Let x be the number of additional toppings.
Let y be the total cost.
Fixed Cost = $3
Cost for x toppings = $0.75x
Thus, a linear equation representing this situation is:
Next, we graph the linear equation:
![\begin{gathered} When\;x=0,y=3+0.75\left(0\right)=3\implies(0,3) \\ When\;x=4,y=3+0.75(4)=6\operatorname{\implies}(4,6) \end{gathered}]()
Join the points (0,3) and (4,6) to graph the line:
From the graph:
• When the number of toppings, x=4
,
• The total cost, y=$6
Thus, Simon can order 4 toppings with $6.