See my comments . I think the answer might be D 25
Answer:
15:5 = 18:6 = 21:7
The scale factor is 1/3 or 0.33.
Step-by-step explanation:
A) I=prt; I=20,000(.05)(4) = $4000
b) I = prt; I = 20,000(.05)(2) = $2000
$4000-$2000 = $2000. You save $2000 by paying it off in 2 years vs. 4 years
The point-slope form:

m - slope
(x₁, y₁) - the point
The formula of a slope:

We have the points (5, 4) and (2, -2). Substitute:

- <em>point-slope form</em>
<em>add 4 to both sides</em>
- <em>slope-intercept form</em>
<em>subtract 2x from both sides</em>
<em>change the signs</em>
- <em>standard form</em>
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From the table we have two points (1, 3) and (2, 7). SubstituteL

- <em>point-slope form</em>
<em>add 3 to both sides</em>
- <em>slope-intercept form</em>
<em>subtract 4x from both sides</em>
<em>change the signs</em>
- <em>standard form</em>