Rachel is getting a sundae where the cost is proportional to the weight of the sundae she makes. Last time Rachel went she bought a 12-ounce sundae for $4.20. This time she buys a 17-ounce sundae. Let c be the cost of the sundae. Set up and solve a proportion for c.

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step-by-step explanation:

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.