Alan use the expression 5 / 9 f - 32 1 f is a temperature in degrees Fahrenheit to convert a temperature from Fahrenheit to Celsius he evaluated the expression as shown below and found that 45 degrees Fahrenheit is equivalent to -7 degrees C what error did Allen make?​

, 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

answer is a. 13.268 l know it is

well can we see it?