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ioda
3 years ago
11

F(x)=9x^2+7x-13 describe the behavior

Mathematics
1 answer:
levacccp [35]3 years ago
8 0

Answer:

hob

Step-by-step explanation:

jbibou

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Find the average rate of change, in people per year, for the population between the years 1900 and 1920.​
elena-s [515]

Step-by-step explanation:

the average change rate of a function f(x) in an interval [x1 .. x2] is

(f(x2) - f(x1)) / (x2 - x1)

in our case that is

(7000 - 2500) / (20 - 0) = 4500 / 20 = 225

the population changed in average by 225 people per year from 1900 to 1920.

5 0
2 years ago
A growth medium is inoculated with 1,000 bacteria, which grow at a rate of 15% each day. What is the population of the culture 6
Leto [7]
<h2>Number of bacteria after 6 days is 2313</h2>

Step-by-step explanation:

Population after n days is given by

              P_n=P_0(1+r)^n

Initial population, P₀ = 1000

Increase rate, r = 15 % = 0.15

Number of days, n = 6

Substituting

             P_n=P_0(1+r)^n\\\\P_6=1000(1+0.15)^6\\\\P_6=1000(1.15)^6\\\\P_6=1000\times 2.313\\\\P_6=2313

Number of bacteria after 6 days = 2313

7 0
3 years ago
Read 2 more answers
A bakery uses 8 table spoons of honey for every 10 cups of flour to make bread dough some days they bake bigger batches and some
Arada [10]

Answer:

The ratio would be, 4 tablespoons of honey: 5 cups of flour

Step-by-step explanation:

4/5 is the simplified version of 8/10, which is what we were first given

6 0
2 years ago
A line has a slope of 7 and passes through the point (-2,-1) What is its equation in point-slope form?
elena-s [515]

Answer:

y + 1 = 7(x + 2).

Step-by-step explanation:

Point slope form:

y - y1 =m(x - x1).

Here m = 7 and (x1,  y1) = (-2,  -1)

So the answer is;

y - (-1) = 7(x - (-2))

5 0
3 years ago
A 7-day cruise is being advertised for 849$. What is the unit price per day?
gtnhenbr [62]

Answer:

$ 121.29

Step-by-step explanation:

849 / 7 = 121.28571428571

rounded to 121.29

3 0
3 years ago
Read 2 more answers
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