# Help with Pre-Calculus

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## Here are the step by step explanations for you (A+ work)

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Here are xxx xxxx xx xxxx xxxxxxxxxxxx xxx xxx xxx xxxxx

just xxxxx in xxx xx I am not xxxxxxxx xxx it.

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x

xx all steps with **brief xxxxxxxxxxxx** xxxxxxx xx xxxx xxx xxxx xx xxx examples xx xxx xxxxxx

**Before you do xx read xxx xxxx xx the xxx xx xxx exam.**

Find the xxxx xxxxxxx by xxx xxxxxxxxxxx

y = xxx xxx x = x

We can find the xxxxx by plotting points

Y = |x|

The xxxxxx xxxxxx will xx a xxxxxxxx xx shown xx xxxxxxx

For x = 4 xx xxx points (0, xx xxx 4) joining xx xxx the xxxxxxx

For x xxxx we xxx the graph xx shown xx xxxx

Point of intersection xxx xxx 4) xxx (-4, 4)

So we get Base of xxxxxxxx as x units

xxx xxxxxx xx triangle xx x xxxxxx

Area = ½ x x * 4 x 16 xx xxxxxx

xxx

**Solve each xxxxxx xxxxx xxxxxx the xxxxxxxxxxx xxxxxx xx xxx substitution xxxxxxx Verify xxxx result xx graphing each xxxxxxx xxxxxxxx xxx xxxxx of intersection xx xxxx graph.**

**2x x x x 7
**

**-2x x xx x xx**

**Also, xxxxxx xxxx result by graphing the xxxxxx xx xxxxxxxxx xxxxxxx**

xx + x = 7

-2x x xx = xx

Adding xxx two xxxxxxxxx xx can xxxxxxxxx x

We xxxx

xx =

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