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FromTheMoon [43]

2 years ago

13

The graph passes through the point (20, 6). What is the meaning of this point in the context of the situation?

1 answer:

Aliun [14]2 years ago

4 0

Answer:

Option B. After 20 minutes, Shari had 6 kilometers left to run

Step-by-step explanation:

Let

x ----> the time in minutes

y ----> the distance remaining in kilometers

we have the ordered pair (20,6)

That means

x=20 min

y=6 km

so

After 20 minutes, Shari had 6 kilometers left to run

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At the beginning of an experiment, the number of bacteria in a colony was counted at time t=O. The number of bacteria in the col

yan [13]

Answer:

1092

Step-by-step explanation:

We have been given that the number of bacteria in the colony t minutes after the initial count modeled by the function $B(t)=9(3)^t$ . We are asked to find the average rate of change in the number of bacteria over the first 6 minutes of the experiment.

We will use average rate of change formula to solve our given problem.

$\text{Average rate of change}=\frac{f(b)-f(a)}{b-a}$

Upon substituting our given values, we will get:

$\text{Average rate of change}=\frac{b(6)-b(0)}{6-0}$

$\text{Average rate of change}=\frac{9(3)^6-9(3)^0}{6}$

$\text{Average rate of change}=\frac{9(729)-9(1)}{6}$

$\text{Average rate of change}=\frac{6561-9}{6}$

$\text{Average rate of change}=\frac{6552}{6}$

$\text{Average rate of change}=1092$

Therefore, the average rate of change in the number of bacteria is 1092 bacteria per minute.

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2 years ago

Add fractions with unlike denominators

stealth61 [152]

Answer:

1 5/12 i think im sorry if i get it wrong.

Step-by-step explanation:

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3 years ago

Joanie runs the concession stand for the school's baseball games. At each game, the best selling items are pretzels and hot dogs

Elenna [48]

X is pretzels and y is hot dogs
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Step-by-step explanation:

Simplify the expression.

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