Evaluate the expression for the given quantity. -9.8t + 20t + 8 for t = -2, 0, 3.5

Step-by-step explanation:

The given expression is

And we have to evaluate it for , and .

To evaluate we just need to replace each t-value into the polynomial.

For , we have

For , we have

For we have

Therefore, the result for each t-value is, respectively, is -12.4, 8 and 43.7.

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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