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2 years ago

PLS HELP NOW 55 POINTS ALL I HAVE

Mathematics

1 answer:

snow_lady [41]2 years ago

3 0

Answer:

Option B

Step-by-step explanation:

Given function:

f(x) = 15*1.25ˣ

The answer choices give us two ordered pairs.

The first pair has x = 0 for all answer options, let's check what y- coordinate corresponds to this:

f(0) = 15*1.25⁰ = 15*1 = 15

This is option B

Let's verify the second point of this option:

f(5) = 15*1.25⁵ = 45.77

We can confirm this point as well. So correct choice is B

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These points are on the line:

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Given the following points:

$\mleft(-4,7\mright);(-1,-3)$

Then, you can set up that:

$\begin{gathered} y_2=-3_{} \\ y_1=7 \\ x_2=-1 \\ x_1=-4 \end{gathered}$

Therefore, substituting values into the formula and evaluating, you get:

$\begin{gathered} m=\frac{-3-7}{-1-(-4)} \\ \\ m=\frac{-10}{-1+4} \\ \\ m=-\frac{10}{3} \end{gathered}$

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$m=-\frac{10}{3}$

• It is decreasing.

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