Answer:
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Step-by-step explanation:
Natalie pays $100 per phone or $100p
She pays a base price of $300 for renting equipment
The equation is C = $100p + $300
Number of phones manufactured        Total Cost to manufacture phones
            0                          C = $100(0) + $300 = $300
            1                           C = $100(1) + $300 = $400
            2                          C = $100(2) + $300 = $500
            3                          C = $100(3) + $300 = $600
The equation is $100 for every p, phone, plus $300 for the price
The equation is C = $100p + $300
-Chetan K