Question
I just want to check to make sure I am correct --
my equation is y = -x^2 + 90x - 800
If x = 100, -x^2 would be 10,000, not -10,000? Because -100 x -100 is 10,000, not -10,000 --- my calculator keeps giving me a negative number.
So my overall number is 18,200
my equation is y = -x^2 + 90x - 800
If x = 100, -x^2 would be 10,000, not -10,000? Because -100 x -100 is 10,000, not -10,000 --- my calculator keeps giving me a negative number.
So my overall number is 18,200
Answers
Damon
NO
-x^2 is the same as
-1 * x^2
=-1 * 10,000
= -10,000
-x^2 is the same as
-1 * x^2
=-1 * 10,000
= -10,000
Damon
In other words your calculator won the argument this time :)