On this part, you can use the formula for compound interest:
F = P(1+i)^n
F = future worth of $
P = present worth of $
i=interest
n=years
F = 2700(1+0.03)^1
F = 2781
<span>So interest = 2781-2700 = $81
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Assuming you're concerned with interest rate problems, r is generally involved in something like the formula ...
... i = prt
So, r will have the units of ...
... r = i/(pt) = (dollars)/(dollars·year) = 1/year
That is, r is <em>(some fraction) per year</em>.
_____
Often, the fraction is expressed as a percentage. The fraction will be unitless (as percentages are), leaving the units of r as year⁻¹.
Step-by-step explanation:
The answer in the picture above
Y=mx+b is slope intercept form...
m=slope
b=y-intercept
Answer- y=-9+5