Simplify each expression. 5a - 2 - 3a + 7

Evaluate if x =2, y =1, a = -3, and b = 4. (3a-2b)+7

Simplify the expression. 2(3a-6)-15a-26

Simplify each expression. $5a - 2 - 3a + 7$

Evaluate if a = 2, b = -3, and c = 4. (3a - 2b)c

Simplify the given expression.

$$(3a^3b^2)(-5ab^3)$$

Find the difference.

$$\frac{4}{a} - \frac{1}{3a}$$

Simplify each expression. $\dfrac{18a^4}{3a^2}$

Evaluate each expression if a=4, b=8, and c=11. 3a+b

Evaluate each expression when a=12 and b=-9

$$3a \div b$$

Determine whether the statement $-3b<-3a$ is true or false, given $a<b$.

Multiply: (3a + 7b)(2a - 9b)

Find the sum.

$$\frac{a}{4} + \frac{3a}{4}$$

For each figure, designate the region in which the coordinates of the points satisfy the given system of inequalities.

$$\left\{\begin{array}{l}y \geq x^2+6 x+3 \\ y<-x+2\end{array}\right.$$