PRE-ALGEBRA FINAL TEST

Solve: –5s = 9

• $s=–45$

• $s=45$

• $s=-\ \frac{9}{5}$

• $s=\frac{9}{5}$

Solve: 3t – (–t) = 12

• $t=4$

• $t=–4$

• $t=3$

• $t=–3\sqrt{ }$

Solve: 3 + 5t + 2 = 50

• t = 6

• t = –6

• t = 9

• t = –9

Which equation can be used to find the described number?

The sum of twice a number and eight less than the number is sixteen.

• 2n – (8 + n) = 16

• 2n + (8 – n) = 16

• 2n + (n – 8) = 16

• 2n – 8 = 16 – n

Which of the following is the basic equation relating distance, rate, and time when an object is in uniform motion?

• $rt=d$

• $rd=t$

• $\frac{r}{d}\ =t$

• $\frac{t}{d}=r$

Which of the following equations can be used to find the described number? The sum of one-fifth of a number and eight is seven.

• $\frac{1}{5\ }\left(n+8\right)=7$

• $\frac{n+8}{5}=7$

• $\frac{1}{5}n\ +\ 8\ =7$

Which property states the following?

If a > b, then a + c > b + c.

• Addition Property of Equality

• Symmetric Property of Equality

• Addition Property of Inequality

• Commutative Property of Equality

The Multiplication Property of Inequality states that if a > b and c < 0, then

• ac > bc

• ac bc

• ac < bc

• ac bc

Which of the following symbols is used to represent the phrase "at least"?

• $>$

• $<$

• $\ge$

• $\le$

If 8r – 3r = 80, then r is equal to.

• 18

• 6

• 16

• None of these