<span>y = x^3 {compression factor places coefficient out in front of the polynomial}
y = (1/7) x^3 {horizontal shift 8 units to the left changes all x to x + 8}
y = (1/7) (x+8)^3 {Reflection across the x axis makes all y values negatives of one another}
-y = (1/7) (x+8)^3 {Now multiply by -1 to get y = f(x) form}
y = (-1/7) (x+8)^3 </span>
Okay so they were both 9, nine years ago because 9 plus 9 is 18.
They would both be 18 in the present age im pretty sure?
Answer:
about 1,620 cubic inches
Hope that was helpful.Thank you!
