Asked by Steve

Determine whether the function represents exponential growth or decay. Then find the y-intercept.

y=4(5/6)^x
Answered by defensivepoison
My answer is y intercept is 4.

Explanation:
In order to find the y intercept of a function, just let the value of x equals to 0.

5/6 raise to zero is equal to 1. ( rule: any number raise to 0 is equal to one)
So 4 times 1 equals to 4.

* It is an exponential decay..
Explanation:
Try substituting some values to x, for example:
4 times (5/6) raise to 1 is equal to 10/3 or 3.3333..
4 times (5/6) raise to 2 is equal to 25/9 or 2.77..

Just by doind that you can know if it is a growth or a decay.
Answered by Reiny
correct
Answered by Steve
thank you both
Answered by defensivepoison
Your very welcome
Answered by stan nct127
1B
2C
3C
4D
5D
6C
7B
8C
9D
10C
Answered by abby
stan is 100% correct. thx
Answered by Connor
stan nct127 has all the correct ones
Answered by hey
stan nct127 is 100% correct.
if ur unsure of the letters here are the answers:
1: exponential decay:4
2: exponential growth:12
3:exponential growth: 129
4:rick: $1,480; sally: $1,500
5: y=120,000(1.012)*;143,512
6:y=1,860,000(0.985) ; 1,551,485
7: 2,249.73
8: 4,051.63
10: 6 years
HAPPY HOLIDAYS EVERYONE<3
Answered by hey
i missed number 9… oops here it is actually.
stan nct127 is 100% correct.
if ur unsure of the letters here are the answers:
1: exponential decay:4
2: exponential growth:12
3:exponential growth: 129
4:rick: $1,480; sally: $1,500
5: y=120,000(1.012)*;143,512
6:y=1,860,000(0.985) ; 1,551,485
7: 2,249.73
8: 4,051.63
9:6 years
10:11 years
HAPPY HOLIDAYS EVERYONE<3
Answered by Save ur tears :)
Thxss. last day x_x
Answered by blbl
thx 100%
Answered by Saraya
the above are correct except
1. 1.70
2. 0.25
Answered by Tea
If you've got a different practice like I did, than these are the answers!
1. B) 1.70
2. D) 0.25
3. C) Exponential growth; 129
4. D) Rick: $1,480.24; Sally: $1,500.00
5. D) y = 120,000 (1.012)^x; 143,512
6. C) y = 1,860,000 (0.985)^x; 1,551,485
7. B) $2,249.73
8. C) $4,051.63
9. D) 6 years
10. C) 11 years
Answered by Tea
Oh and the quick check!
1. A) (You can double check on desmos or mathway)
2. B) 130% increase
3. D) f(x)= 175 (1.22)^x ; 473
4. C) 7 years
5. D) y= 110(0.9)^x
Answered by Alex
Tea is correct for the quick check
Thank you<3
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