Design = $45
rate per child = $5.50
number of children, x
total cost, f(x) = $5.5x + $45
You first combine like terms -1x and -4x to make the equation 21=6-5x then subtract 6 from itself to cancel it out and from 21, 15=5x where x= 3
10 different pairs. Since there are 5 different brands you simply add 4+3+2+1 to get 10.
Copper: density ≤ 3.4
Iron: density=2.26
Before: 200 t
After: 800 t
Answer:
x-intercept = (3/4,0)
y'intercept = (0,-3)
Step-by-step explanation:
Not sure what conversion you need but here are the intercepts
