The percent of change will always be represented by a positive number because that change is an absolute value. Absolute values will always stay positive because the direction is ignored. It's not like a -1 or a -2, but it's a zero or a 3.
Hope this helped you out! :D
5x+9 = 10x-9
Take 5x from both sides
9 = 5x-9
Add 9 to both sides
18 = 5x
Divide by 5
3.6=x
20×8=160
5×8=40
10×8=80
4×8=32
15×8=120
160+40+80+120+32=432
432×2=864
864 is the answer,so your answer is b
we have
Step 
Move the constants to the right side
Step 
Factor 3 out of the variable terms
Step 
Add 
to both sides of the equation
Step 
Write the polynomial as a binomial squared
therefore
the answer is
Factor 3 out of the variable terms.
Well, what you're going to do is.. turn 3 1/2 into an irregular fraction.
3 = 6/2
we still have the initially 1/2 left so we will add that.
7/2
now we want to change it so that the denominator is equal to 4 so we multiply both top and bottom by 2
14/4
now we divide the 14 by 3 and you will get approximately 4. we will ignore the rest because it asks for whole servings and 3 only goes nicely into 14 4 times
