The rate of recipt of income from the sales of vases from 1988 to 1993 can be approximated by r(t)= 100/(t+0.87)^2 billion dollars per year, where t is time in years since january 1988. estimate to the nearest $1 billion, the total change in income from january 1988 to january 1993.
answer choices are: $43, $53, $137, $98, $117

The correct option is 4.

Step-by-step explanation:

It is given that the rate of recipt of income from the sales of vases from 1988 to 1993 can be approximated by

billion dollars per year, where t is time in years since January 1988.

We need to estimate the total change in income from January 1988 to January 1993.

On integration we get

The total change in income from January 1988 to January 1993 is $98. Therefore the correct option is 4.

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

step-by-step explanation:

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads