Prealgebra 2e

# Practice Test

Prealgebra 2ePractice Test

### Practice Test

325.

Determine whether each number is a solution to the equation.
$3x+5=23.3x+5=23.$

1. $66$
2. $235235$

In the following exercises, solve each equation.

326.

$n − 18 = 31 n − 18 = 31$

327.

$9 c = 144 9 c = 144$

328.

$4 y − 8 = 16 4 y − 8 = 16$

329.

$−8 x − 15 + 9 x − 1 = −21 −8 x − 15 + 9 x − 1 = −21$

330.

$−15 a = 120 −15 a = 120$

331.

$2 3 x = 6 2 3 x = 6$

332.

$x + 3.8 = 8.2 x + 3.8 = 8.2$

333.

$10 y = −5 y + 60 10 y = −5 y + 60$

334.

$8 n + 2 = 6 n + 12 8 n + 2 = 6 n + 12$

335.

$9 m − 2 − 4 m + m = 42 − 8 9 m − 2 − 4 m + m = 42 − 8$

336.

$−5 ( 2 x + 1 ) = 45 −5 ( 2 x + 1 ) = 45$

337.

$− ( d + 9 ) = 23 − ( d + 9 ) = 23$

338.

$1 3 ( 6 m + 21 ) = m − 7 1 3 ( 6 m + 21 ) = m − 7$

339.

$2 ( 6 x + 5 ) − 8 = −22 2 ( 6 x + 5 ) − 8 = −22$

340.

$8 ( 3 a + 5 ) − 7 ( 4 a − 3 ) = 20 − 3 a 8 ( 3 a + 5 ) − 7 ( 4 a − 3 ) = 20 − 3 a$

341.

$1 4 p + 1 3 = 1 2 1 4 p + 1 3 = 1 2$

342.

$0.1 d + 0.25 ( d + 8 ) = 4.1 0.1 d + 0.25 ( d + 8 ) = 4.1$

343.

Translate and solve: The difference of twice $xx$ and $44$ is $16.16.$

344.

Samuel paid $25.8225.82$ for gas this week, which was $3.473.47$ less than he paid last week. How much did he pay last week?