John is buying pots for the pots in his garden. the small pots are priced at m dollars each. he has already spent b dollars on the big pots. the following expression represents the total amount that john would spend on pots after buying x small pots.
mx+b
if the value of the small pots, m dollars, is tripled, select the statement that accurately describes its effect on the expression.

A. the amount that john has spent on big pots, b, will be one third.
B. the amount that john has spent on big pots, b, will triple.
C. the amount that john will spend on small pots, mx, will triple.
D. the amount that john will spend on small pots, mx, will not change.

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Marking brainliest for original answer.. are these two triangles similar? how can you tell?