Answer: X= 4
Step-by-step explanation:
24+0.44x=19+1.69x exp equation like:
24+44x/100=19+169x/100
Multiply left and right side of equation with 100
2400+44x=1900+169x
2400-1900=169x-44x
500=125x
x=500/125
x=4
Let the first integer be
. So, the next even number is 
Let's translate the formula: the square of the second is
, twice the first is
. So, the equation is

Expand the square to get

The solutions to this equations are

So, the possible consecutive even numbers are

12.) she gets 70 because she sells 60 fiction and 20 non fiction and you add 60 to 10 because the things are half off
You have to simplify the 1/5 first.
Then simplify the square root of 1 to equal 1
Then rationalize the denominator
Then simplify