Elementary Algebra 2e

# Practice Test

### Practice Test

In the following exercises, simplify.

766.

$81 + 144 81 + 144$

767.

$169 m 4 n 2 169 m 4 n 2$

768.

$36 n 13 36 n 13$

769.

$3 13 + 5 2 + 13 3 13 + 5 2 + 13$

770.

$5 20 + 2 125 5 20 + 2 125$

771.

$( 3 6 y ) ( 2 50 y 3 ) ( 3 6 y ) ( 2 50 y 3 )$

772.

$( 2 − 5 x ) ( 3 + x ) ( 2 − 5 x ) ( 3 + x )$

773.

$( 1 − 2 q ) 2 ( 1 − 2 q ) 2$

774.

$a124a124$
$b213b213$

775.

$81x12481x124$
$64y18664y186$

776.

$64 r 12 25 r 6 64 r 12 25 r 6$

777.

$14 y 3 7 y 14 y 3 7 y$

778.

$256 x 7 5 4 x 2 5 256 x 7 5 4 x 2 5$

779.

$512 4 − 2 32 4 512 4 − 2 32 4$

780.

$2561425614$
$2431524315$

781.

$49 3 2 49 3 2$

782.

$25 − 5 2 25 − 5 2$

783.

$w 3 4 w 7 4 w 3 4 w 7 4$

784.

$( 27 s 3 5 ) 1 3 ( 27 s 3 5 ) 1 3$

In the following exercises, rationalize the denominator.

785.

$3 2 6 3 2 6$

786.

$3 x + 5 3 x + 5$

In the following exercises, solve.

787.

$3 2 x − 3 − 20 = 7 3 2 x − 3 − 20 = 7$

788.

$3 u − 2 = 5 u + 1 3 u − 2 = 5 u + 1$

In the following exercise, solve.

789.

A helicopter flying at an altitude of 600 feet dropped a package to a lifeboat. Use the formula $t=h4t=h4$ to find how many seconds it took for the package to reach the hiker. Round your answer to the nearest tenth of a second.

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