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:
y = -53x
Step-by-step explanation:
since 0,0 is a point, there is no b, and -5/3 times 3 is -5
So what you want to find is: what number times 120% is $324.00. (IT is 120% percent because it is the original <em>plus</em> the new percent) Simply set it up like so:
SN *120% = $324.00
Now turn the percent into a decimal:
SN * 1.20 = $324.00
Now divide $324.00 by 1.20
SN = $270
The original value of the basketball player's autograph was 270 dollars!
Hope that helps!
Answer:
2.07%
Step-by-step explanation:
92 out of a total of 3,204 graduates earned a professional degree. That works out to 0.0207, or 2.07%.
