Answer:
Step-by-step explanation:
2.38 km x 10^4 = 23,800 decimeters
In order to change from 35 to 62, we have to add 27. So, the question becomes: which percentage of 35 is 27?
To answer this question, we set this simple equation

And solving for x we have

So, if you change from 35 to 62, you have an increase of about 77%
4x-12=32-7x
4x+7x=32+12
11x=44
x=4
Answer:
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form
or 
In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin
we have the point (-30,18)
so
x=-30, y=18
Find the value of k
substitute
Simplify
Divide by 6 both numerator and denominator
Answer:
1) 0.9, 0.99, 0.09, 0.0009
2) 4(2x²+9x)
3) 110
4) $9.50 per pizza
5) 23