Tracy bought five trays of plants for $105 each tray contain 12 plant each plane cost the same amount plans can be purchased individually how much more money will tracy need to spend for 15 additional plants

Cost of five trays of plant = $105

Cost of one tray of plant = $105 5

So, Cost of one tray of plant = $21

Since, each tray contains 12 plants.

So, Cost of 12 plants = $21

Cost of 1 plant = $21 12

Cost of 15 plants =

So, Cost of 15 plants = $26.25

Therefore, Tracy needs to spend $26.25 for 15 additional plants.

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for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for

there is nothing below so i cannot

step-by-step explanation: