Why do most sub-saharan africans speak more than one language?
a. most have higher education degrees.
b. the local language and the language used for official business is not the same.
c. students must speak two languages to graduate from high school.
d. they frequently travel between the world's continents.

Surreset the population of snails in the farm = xvumber of marked snails number of snails which are captured and markeember of recaptured snails population of snails in the vegetable farm5 - 24124let's disehow would you fthe value of x if ynot change 5 insimplest form? 9x 24*= 6 x 2= 144er estimates that there are 144 snails in the