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Chapter 0: Problem 74
Write each number in decimal notation without the use of exponents. $$-3.14 \times 10^{-3}$$
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Give an example of a rational number that is not an integer.
Simplify and express the answer in descending powers of \(x\) : $$2 x\left(x^{2}+4 x+5\right)+3\left(x^{2}+4 x+5\right)$$
Your local electronics store is having an end-of-the-year sale. The price on a plasma television had been reduced by \(30 \% .\) Now the sale price is reduced by another \(30 \%\). If \(x\) is the television's original price, the sale price can be modeled by $$(x-0.3 x)-0.3(x-0.3 x)$$ a. Factor out \((x-0.3 x)\) from each term. Then simplify the resulting expression. b. Use the simplified expression from part (a) to answer these questions. With a \(30 \%\) reduction followed by a \(30 \%\) reduction, is the television selling at \(40 \%\) of its original price? If not, at what percentage of the original price is it selling?
$$\frac{5}{4} \cdot \frac{8}{15}$$
Find the intersection of the sets. $$\\{w, y, z\\} \cap \varnothing$$
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