School guidelines require that there must be at least 2 chaperones for every 25 students going on a school trip. how many chaperones must there be for 80 students? a: 6 chaperones b: 40 chaperones c: 3 chaperones d: 7 chaperones

ratio and proprtion

chaperones/students=2/25

2/25=?/80

multiply both sides by 80 to find ?

160/25=?

6.4=?

you can't have 0.4 chaperones and 6 chaperones is too little

so the answer is 7 chaperones

answer is D

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0