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choli [55]
3 years ago
12

There are 15 people in the chorus. Each year, the number of people in the chorus increases by 12%.

Mathematics
1 answer:
tia_tia [17]3 years ago
8 0
This has already been answered before but...
Part AChorus:Expontential growth = b*a^x b = 15a = 1.12              (a= r+1), r = 12%
Which gives a function of f(x) = 15*1.12^x 

BandLinear growth = ax+ba = 2b = 30
Which gives a function of g(x)=2x+30
Part B:f(9) = 15*1.12^9 = 41.59g(9) = 2*9+30 = 48
Part C:This is probably problem solving, where you're allowed to use calculators and other softwares.
Therefore you can use different softwares, and make f(x) = g(x).I did this, and got it to 10.95427141
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The cost of a can ride , y, based on the number of miles driven , x, is represented by
lozanna [386]

Answer:

Step-by-step explanation:

y = 0.80x + 2.50

a 7 mile ride......x = 7

y = 0.80(7) + 2.50

y = 5.60 + 2.50

y = 8.10 <=== the 7 mile ride cost $ 8.10

the ride cost 13.70.....y = 13.70

13.70 = 0.80x + 2.50

13.70 - 2.50 = 0.80x

11.2 = 0.80x

11.2 / 0.80 = x

14 = x <=== u travel 14 miles

7 0
3 years ago
Please help me solve 4 inequalities and show work. Will get brainiest!!
FrozenT [24]
1. y<span> ≤ 4x/3+5
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5 0
3 years ago
sam had 70 erasers and rulers. after giving away 1/3 of his erasers and 10 rulers, he had an equal number of erasers and rulers
Radda [10]

Answer:

36 erasers

Step-by-step explanation:

Let number of erasers be e

let number of rulers be r

We can write:

e + r = 70

and

After giving away, he has

Erasers:  2/3e

Rulers:  r - 10

These two are equal, so we can write and solve:

2/3e = r - 10

2/3e + 10 = r

Putting this in initial equation, we have:

e + (2/3e + 10) = 70

5/3e + 10 = 70

5/3 e = 60

e = 36

And rulers is:

r = 2/3(36) + 10 = 34

Hence, he had 36 erasers in the beginning

4 0
4 years ago
9
stepan [7]

Answer:

median is 20

Step-by-step explanation:

due to both of them having it in there 1 time

5 0
2 years ago
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Please help this is due in three minutes
sleet_krkn [62]

Answer:

what is your question, i am happy to help

Step-by-step explanation:

5 0
3 years ago
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