2/5 plus 2/5 is five so we can assume if we multiply it by 4 it will be 10! 2/5 times 4 equals 10!!! Hope this helps! :D
Lets say p is for pay. An expression for you would be p=8h because you would get 8 dollars per hour that you work. Then you would replace h with however many hours you worked. Ex: p=8h. You worked 12 hours, so 8 x 12 would equal 96, so you would get 96 dollars as your total pay, or p.
Vertex form:
y = a(x - h)² + k
I have not learned this stuff yet, but by using online calculators, I can determine that the vertex form is:
Y = (x - 4)² - 19
I believe so :/
The Numerator is 1, which is the top. The Denominator is the 8. I like to remember (D)own is the (D)enominator.