Use the substitution method for x
y= 2(2)+5
y=9
Answer:(2,9)
If you multiply or divide both sides by a negative number it changes the direction of the inequality sign
It increased by 100%.
This is the formula for future problems like this
(new cost - original price) / original price
Answer:
Step-by-step explanation:
The strange thing about the greatest integer function is that the number you are evaluating the function at is not actually the number unless its an integer. The rule is to round down, ALWAYS, if you are dealing with a value of x that is not an integer. In other words, you are NOT evaluating the function at 8.6, you have to round down to 8 and evaluate it there. 8 - 5 = 3
