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Find a quadratic model for the data. Use 1981 as year 0.

(a) Write the quadratic equation.

(b) Use your model when first class postage was 37 cents.

(c) Use your model to predict when first-class postage will be 50 cents. Explain why your prediction may not be valid.

Ac contractor is building a new subdivision outside of the city. he has started work on the first street and is planning on the other streets to run in a direction parallel to the first. the second street will pass through (-2,4) find the equation of the location of the second street in standard form. a.2x+y=2 b. x-y=2 c.2x+y=2 d.x+y=2

In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.

The sum of two numbers is 12 and their difference is 18 what are the two numbers