The simple interest i on an investment of p dollars at an interest rate r for t years is given by i=prt. find the time it would take to earn $1400 in interest on an investment of $27,000 at a rate of 4.2%.

we know that

where

I is the amount in interest

P is the investment

r is the interest rate

t is the time in years

Solve for t

we have

substitute

therefore

the answer is

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.