18.The price of a computer stock can be represented by S=3t2 where t is the
= 3t
number of months the stock has been on
the market. Find the predicted price of the
stock after 64 months.

practice. practice. practice.

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

step-by-step explanation: