Answer: A
<u>Step-by-step explanation:</u>
f(x) = -5x - 4 ⇒ y = -5x - 4 <em>switch the x's and y's and solve for y</em>
x = -5y - 4
<u>+4 </u> <u> +4 </u>
x + 4 = -5y




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The top line of the second question is cut off so cannot help you without knowing what the restriction is on v(x).
Answer:

Step-by-step explanation:
From the question we are told that
Distance between Edenville and Westfalls 
Distance between Westfalls and Concord 
Generally the equation for Pythagoras is mathematically given by




The distance b/w Edenville to Concord is

Subtract 985 from 177 since Anna has 177 more songs than Ryelin. Then divide that answer by 2 which gives each one an equal amount then add 177 to one of the answers to get how many each girl has.



So Ryelin has 404 songs downloaded and Anna has 581 songs downloaded.
After 24 hours, 35.4% of the initial dosage remains on the body.
<h3>What percentage of the last dosage remains?</h3>
The exponential decay is written as:

Where A is the initial value, in this case 2.8mg.
k is the constant of decay, given by the logarithm of 2 over the half life, in this case, is:

Replacing all that in the above formula, and evaluating in x = 24 hours we get:

The percentage of the initial dosage that remains is:

If you want to learn more about exponential decays:
brainly.com/question/11464095
#SPJ1
The answer to that question is 11