Answer:
Step-by-step explanation:
In general, 
Substitute x = 2, y = 15
(1) 
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Substitute x = 1, y = 5
(2) 
Divide equation (1) by equation (2)
3 = b
Now substitute b = 3 in equation (2) to find k
5 = k(3)
Since we know the values for k and b, we now have the exponential function that passes thru (1, 5) and (2, 15)
Answer:
625 pi (no approximation)or 1962.5(approximation)
Step-by-step explanation:
You do pi times radius squared.
Answer:
Powerpoint
Step-by-step explanation:
I think that a powerpoint presentation would be best. With the first slide, put the picture and a title. With each slide, put more than one word and maybe an example. Make it colorful and maybe put some math puns in some of them.
Hope this helps.
Answer:
x = friends that paid discount price = 8
y = friends that paid regular price = 4
Step-by-step explanation:
Let
x = friends that paid discount price
y = friends that paid regular price
x + y = 12 (1)
6x + 8y = 80 (2)
From (1)
x = 12 - y
Substitute x = 12 - y into (2)
6x + 8y = 80 (2)
6(12 - y) + 8y = 80
72 - 6y + 8y = 80
- 6y + 8y = 80 - 72
2y = 8
y = 8/2
y = 4
Substitute y = 4 into (1)
x + y = 12 (1)
x + 4 = 12
x = 12 - 4
x = 8
x = friends that paid discount price = 8
y = friends that paid regular price = 4
I would just round up to 200 and then subtract twelve or just subtract 200 what ever way u prefer.
