Which ratio is equivalent to the scale
1 cm
———
50 mi
?

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

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Rewrite the following quadratic functions in intercept or factored form. show your work. f(t) = 20t^2 + 14t - 12