Helen has been working on a science project about plant growth. plant a started at a height of 6 cm and exhibited steady growth during the first four weeks of the project. after those four weeks, plant a was 26.8 cm in height.

in a linear model of plant a's growth, x represents the number of weeks after being planted, and y represents the plant's height in centimeters.

relative to this model, which of the following statements applies?

x is greater than 5

step-by-step explanation:

2x+7 is greater than 17

    -7                           -7

2x is greater than 10

divide by 2 each side

x is greater than 5

, and

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