See solution: ?In each of the following exercises, set up an equation or inequality and
Chapter 4, Problem 43(choose chapter or problem)
In each of the following exercises, set up an equation or inequality and solve the problem. Be sure to indicate clearly what quantity your variable represents. Round to the nearest tenth where necessary.
Sal has $3200 invested in an account paying 7.2% interest per year. At what rate must he invest an additional $2800 so that the annual interest from the two investments will be $390?
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