Get solution: ?In each of the following exercises, set up an equation or inequality and
Chapter 4, Problem 28(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.
How much plain facial cream without any SPF must be mixed with 15 oz of the BlocktheSun sunscreen lotion (See Exercise 27) to produce a lotion with an SPF factor of 20?
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