Answer:
The painting is
Step-by-step explanation:
From the question we are told that
The amount of carbon present after t year is
{Note ; This is the function }
Here is the amount of carbon-14 after time t
the original amount of carbon-14
Now given that the paint as at now contain 27% of the original carbon-14
Then it mean that
So the equation is represented as
=>
=>
=>
=>
=>
Given equation is
It can be written as follows.
Which is of the form
where a=3 and b=4.
We know that the coordinates of the vertices are (a,0) and (-a,0)
Substitute a=3, we get
The vertices are (3,0) and (-3,0).
We know that the coordinates of the foci are (c,0) and (-c,0)
Substitute a=3 and b=4, we get
Substitute c=5, we get
Hence the foci are (5,0) and (-5,0).
Answer:
It's not clear on what it means but the information given it would just be 20*3=60
Step-by-step explanation:
Answer: 10h + 15 = 50
Step-by-step explanation:
Since h is per hour, and it costs $10 per hour, the cost per hour would be 10h, plus the one-time 15 dollar fee.
To find how many hours you can participate, you plug in 50 into the equation and solve it. h = 3.5, meaning you can participate for 3 hours.