SOLUTION: Determining A simple interest rate you borrow $2500 froma friend and promise to pay back $2655 in six months. What simple interest rate will you pay? example: A= P (1 + rt) 26

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2655=2500[1 + r(0.5)]
2655=2500 + 1250r
I don't know how they got 1250r (distributive property)
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The distributive property is a*(b+c)=a*b+a*c
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You have: 2500*(1+r(0.5))
It becomes 2500*1 + 2500*r(0.5)
=2500 + 1250r
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The 1250r is (0,5)2500r = 1250r
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Hope that helps.
Cheers,
Stan H.