Question

The amount of money in Mark's bank account after x months is given by the function f(x) = 1000 – 200x Select the true statement.

Answer 1

The form of the linear function is

$f(x)=ax+b$

a is the rate of change

b is the initial amount

In the given function

$f(x)=1000-200x$

Compare it by the form of the linear function above to find a and b

a = -200

b = 1000

Since b is the initial amount, then

The account began with $1000

The true statement is A