1. Well, we know it cannot be either the last or second to last answer as the original amount of pollutant (when x=0) is 10 tons.
After 1 foot of pipe 8 tons of pollutant are left (x=1). 8 tons is 80% of the original amount of the pollutant present. So, each foot of pipe keeps 80% of the pollutant. Make sense?
2. Just plug in the point into each answer choice.
(2,4)
y= 0.5x+ 5
4=0.5(2)+5
4=6
which is not true therefore the first answer choice is incorrect.
y=0.5x -3
4=0.5(2)-3
4=1-3
4=2
which is not true therefore the first answer choice is incorrect.
y=0.5x-5
4=0.5(2)-5
4=-4
which is not true therefore the first answer choice is incorrect.
y=0.5x +3
4=0.5(2)+3
4=1+3
4=4
This is the correct answer.
Answer:
1
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(3-(-1))/(2-(-2))
m=(3+1)/(2+2)
m=4/4
m=1
The cost for a large pizza with two toppings is $7.25 because you divide 14.50 by 2
The cost for the large pizza with 5 toppings would be $3.80 , simply divide 19.00 by 5.
[1,infinity sign) this is the answer
Answer:
-1.5
Step-by-step explanation:
