Help please!! The dollar value of a house is a function, f(t), of the number of years, t, since the car was purchased. The function is defined by the equation
f(x)=15,000(2/3)^x. The graph f(x) is shown.
What is the y-intercept and what does it represent in context?
a.15,000; the value of the house at the time of purchase
b.15,000; the value of the house after 1 year.
c.2/3 ; the percent decrease in value of the house each year.
d.15,000; the amount the value of the house decreases each year