F(4) is function notation that means the value of y when x = 4.
Replace x with 4 in the expression and evaluate the right side.
f(x) = 3x - 15
f(4) = 3(4) - 15
f(4) = 12 - 15
f(4) = -3
First, find the coordinates of all the points.
Then since we're dealing with a scale factor of 1/3 and we're assuming that it is about the origin, all you need to do is divide the coordinates by 3.
ex : (9,3) --> (3,1)
Because it makes easier and faster to find.
we can even find by measuring each side and calculating area of each face.
Shirts: 3 x 15.50 = 46.50
120 - 46.50 = 73.50 left to spend on shoes
73.50/32.50(cost per pair) = 2.26....so he was able to purchase 2 pairs of shoes.
The answer to the question
