1. Design a number line containing five (5) points. Benin, one of the smallest countries in Africa, has a total area of 43,475 square miles. The population of the country was recently estimated at 10,160,555. About 3,657,790 people live in rural areas. The country has only about 870 miles of surfaced roads.
a. Round off the total population to the nearest hundred thousand people. 
b. Round off Benin’s area in square miles to the nearest thousand.
c. Round off the number of miles of surfaced roads to the nearest ten.
d. Round off the number of people who live in rural areas to the nearest million.

a

b

d

step-by-step explanation:

, 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

h/o/e/s mad

step-by-step explanation:

si si si