Question

Given four functions, place them in order of their y-intercept, from highest to lowest.

f(x) see graph
g(x)
h(x)
j(x)

g(x) = 3(20)x
Al is monitoring the
decay of a population
of fungi. It is reducing
in half every four weeks.
The population started
at 14.
x
j(x)
1
5.00
2
2.50
3
1.25
Possible answers;
f(x),g(x),j(x),h(x)
g(x),h(x),j(x),f(x)
h(x),j(x), g(x),f(x)
j(x),g(x),h(x),f(x)

Answer 1

Answer:h(x),j(x), g(x),f(x)

Explanation:

Answer 2

If Al's population is h(x), h(0) = 14.

If j(x) is exponential, j(0) = 10

If g(x) is really 3*20^x, then g(0) = 3

The graph shows f(0) = 2.


The 3rd ordering seems appropriate.