Item 3 Identify the initial amount $a$ and the rate of growth $r$ (as a percent) of the exponential function $f\left(t\right)=1500\left(1.074\ri ght)^t$ . Evaluate the function when $t=5$ . Round your answer to the nearest tenth.
a=
r= %
when t=5, y=

step-by-step explanation:

f

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

answer: 8 years

step-by-step explanation:

the explanation is that in 8 years the child will be 20 and in 8 years the father will be 40 and 20 is half of 40.