Percent problems
Ayden had a goal of finishing painting at least 80% of the 500 square meters of a house's walls by today. He
actually finished painting 415 square meters today.
Did Ayden meet his goal? Why?

, 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

what i would say the best answer is a. 40.5

191 students play sports and ninety-seven 10th graders were surveyed.

step-by-step explanation: