Patrick has $12,000 saved for medical school from gifts and summer jobs. Because the cost of college has risen each year, Patric
k knows he needs a savings account that will help him meet these increases. In the 10 remaining years before he receives his medical degree, which of the following would most help Patrick to meet these increases?
A. A checking account
B. A compound interest account
C. A high risk investment
D. A simple interest account
A. A checking account
B. A compound interest account
C. A high risk investment
D. A simple interest account
1 answer:
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Your formula for this is 
and 
. Get everything on one side of the equals sign, set it equal to 0 and factor. When you do this you get (x-3)(x+27). The Zero Product Property rule tells us that either x-3 = 0 or x+27 = 0 and that x = 3 and -27. The only thing in math that will NEVER be negative besides time is distance/length, therefore, x cannot be 27 and has to be 3.