Suppose that the useful life of a particular car battery, measured in months, decays with parameter 0.02. We are interested in the life of the battery. 70% of the batteries last at least how long? (Round your answer to two decimal places.)

maybe i can

, 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 level of math? also i don't need to be paid if i can you.