The rate is $19 for the first five lines, and $7.75 for each additional line. how much is to post a 8 line ad

Mathematics

1 answer:

o-na [289]3 years ago

6 0

Answer:

41.5

Step-by-step explanation:

So you see the first five lines are for 19 dollars.

Multiply 7.75 by 3 since there are 3 additional lines. (Answer: 23.25)

Add 19 and 23.25 together. (Answer: 42.25)

My calculator work will be posted below for reference.

Unit Name: Two-Step Equations

<h2>If you need any more help or explanation, follow up in the comments below! :P</h2>

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Which is an exponential decay function f (x)=3/4 (7/4)x f (x)=2/3 (4/5)-x. F (x)=3/2 (8/7)-x f (x)=1/3 (9/2)x

dsp73

The given functions are
$1.\, f(x)= \frac{3}{4}( \frac{7}{4})^{x} \\ \\2.\,f(x)= \frac{2}{3}( \frac{4}{5} ) ^{-x}\\\\3.\, f(x)= \frac{3}{2} ( \frac{8}{7} )^{-x}\\\\4.\,f(x)= \frac{1}{3} ( \frac{9}{2} )^{x}$

Evaluate the functions.
1. Because 7/4 > 1 and the exponent is positive,
the function does not decay.
2.Because 4/5 < 1 and the exponent is negative,
the function does not decay.
3. Because 8/7 > 1 and the exponent is negative,
the function decays.
4. Because 9/2 > 1 and the exponent is positive,
the function does not decay.

A composite plot the functions verifies the answer.

Answer: $f(x)= \frac{3}{2} ( \frac{8}{7} )^{-x}$