Answer:

Step-by-step explanation:
(a) Expression for mass of salt as function of time

i. Set up an expression for the rate of change of salt concentration.

ii. Integrate the expression

iii. Find the constant of integration

iv. Solve for A as a function of time.

The diagram shows A as a function of time. The mass of salt in the tank starts at 1 lb and increases asymptotically to 100 lb.
(b) Time to 2 lb salt

The Venn probabilities for this problem are given as follows:
a. 0.9 = 90%.
b. 0.1 = 10%.
<h3>What is a Venn probability?</h3>
In a Venn probability, two non-independent events are related with each other, as are their probabilities.
The "or probability" is given by:

For this problem, the events are given as follows:
- Event A: Checking account.
- Event B: Savings account.
From the text, the probabilities are given as follows:

From item a, the or probability is given as follows:

There is a 0.9 = 90% probability the customer has either a checking or a savings account.
For item b, <u>none is the opposite of either</u>, hence there is a 1 - 0.9 = 0.1 = 10% probability the customer does not have either a checking or a savings account.
More can be learned about Venn probabilities at brainly.com/question/25698611
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Answer:
A
Step-by-step explanation:
To find the best equation, we simply substitute the values of a, b, and c into the given equations.
a = 21
b = 5
c = 36






<u>Answer:</u>
No, the given set of pairs does not represent a function
<u>Step-by-step explanation:</u>
For a set of values to be a function, each input must have one and only one output value
Now, for the given set, we can note that:
The input -13 has two output values; 4 and 9
<u>Therefore</u>, this set is not a function
Hope this helps :)