Answer: 12
Step-by-step explanation:
For this problem, all you have to do is plug in x=2 into all the x you see.
-3(2)+1.5+2.5(2)-4.5+8(2)
-6+1.5+5-4.5+16=12
Since it's so nicely grouped, we can work with it! For the equation to equal 0, x=0, 3, or -1 (since x-3 and x+1 equal 0 when plugged in with 3 and -1 respectively). All we have to do is plug in numbers before, between, and after these numbers and apply it to the rest of them. Since -1 is the smallest number of the group, we can plug in a number below that (for this example, -5) and plug it in to get -8*-5*-4= something negative since it contains an odd number of negative numbers. Therefore, anything less than 1 is negative. For between -1 and 0, we get x=-0.5 equals -0.5*-3.5*0.5=something positive (since it has an even amount of negative numbers), proving that everything between -1 and 0 here is positive. For something between 0 and 3, we can plug 1 in to get 1*-2*2= something negative. Do you see a pattern here? It's negative, then positive, etc.. Therefore, if the number is greater than 3 it is positive. Reviewing a bit, we can see that (-inf, -1) is negative as well as (0,3), making the interval notation (-inf, -1) U (0, 3) since when you plug -1, 0, and 3 in it is 0, not less than 0!
Well the math comes out to 1102.31 pounds thats a bit unrealistic but i'm fairly sure i converted correctly.
Answer:
57
Step-by-step explanation:
5 |-2^3 - 2| + 7
-2^3 = -8
-8 - 2 = -10
absolute value of -10 = 10
5 * 10 = 50
50 + 7 = 57
Hello,
The correct answer is 18.
Hope this helps!!
Brainliest?
