I'm guessing you're trying to simplify the equation since there is no other information lol
[(2x+y)-3]
So basically when you are trying to simplify equations you have to add the same variables together (In this case X & Y) But since there are no alike variables there really is nothing to add
So your answer would be 2x+y-3
Hoped this helped
First we find the mean (average)
(17 + 18 + 19 + 20 + 21) / 5 = 95/5 = 19
now subtract 19 from all values...then square it
17 - 19 = -2...-2^2 = 4
18 - 19 = -1...-1^2 = 1
19 - 19 = 0...0^2 = 0
20 - 19 = 1....1^2 = 1
21 - 19 = 2...2^2 = 4
now take the mean (average) of those
(4 + 1 + 0 + 1 + 4) / 5 = 10/5 = 2 <== this is ur variance
standard deviation is the square root of the variance...
sq rt 2 = 1.414
The range is the set of y values of a function or relation. In this case, it's the set {9, 0, -7, -1}. The order of the items in the set doesn't matter. We can rearrange that to get {-7, -1, 0, 9}
This is why the answer is choice B
In short, the average rate of change is plainly the slope of the set, so we can pick any two points off there, say 2, 35 and 10, 115,
Given solution: should be solution.
8p (>/=) -7 8p (>/=) -78p (>/=)-7 8p (>/=) -7 SAME
8p/8 (=) -7/8 8p/8 (>/=) -7/8 DIFFERENT
p (=) -7/8 p (>/=) -7/8 DIFFERENT
The error in the given solution was that the inequality sign > was taken out of the equation. It should not be because the expression is an inequality. p can be any number that is greater than or equal to -7/8. It is not limited to only -7/8.