Answer:
1 12/100
Step-by-step explanation:
Answer:
The equation is 
Step-by-step explanation:
Arithmetic sequence:
In an arithmetic sequence, the difference between consecutive terms, called common difference, is always the same.
The general equation for an arithmetic sequence is:

Taking the mth term as reference, the equation can be written as:

t(4) = 8 and t(10) = 32
The common difference can be found:




So

Finding the first term:

So

So
The equation is 
Using derivatives, the rate of change of the mineral level with respect to time for 4 days is -0.012 mg/cm².
<h3>What is the missing information?</h3>
The function for the amount is missing, and is given by:

The problems asks for the rate of change of the mineral level with respect to time for 4 days.
<h3>What is the rate of change after 4 days?</h3>
The rate of change after 4 days is given by:
C'(4).
Applying the chain rule, the derivative of C(t) is given as follows:


When t = 4, we have that:


Applying properties of exponents, we have that:

Hence:

C'(4) = -0.012.
The rate of change of the mineral level with respect to time for 4 days is -0.012 mg/cm².
More can be learned about derivatives at brainly.com/question/23819325
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Answer:
Step-by-step explanation:
The store gave her back the difference (20%-15%= 5%)
5%= the $17 returned
100/5= 20
20*17= $340 which was the original price of the TV before discounts