Lesson 3.6: transformations of functions
pre-test active
how is the graph of the parent function y - x2 transformed to produce the graph of y=3(x+
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it is translated 1 unit right and compressed vertically by a factor of 3.
it is translated 1 unit left and compressed vertically by a factor of 3.
it is translated 1 unit right and stretched vertically by a factor of 3.
it is translated 1 unit left and stretched vertically by a factor of 3.

$20.01

step-by-step explanation:

the sale price is (1.00 - 0.77)($87), or 0.23($87), or $20.01.

step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4