Evaluate.

$4y^2$ for $y = 7$

Write an equivalent expression using a commutative property.

$$ab + c$$

Solve using the Try, Test, Revise strategy.

$$7(14 - \Box) = 35$$

Find the area $(A)$ of a basketball court with length $(l)$ of $26\ \text{m}$ and width $(w)$ of $1400\ \text{cm}$ using the formula $A = lw$.

Evaluate.

$3(2a + b)$ for $b = 4$ and $a = 2$

Evaluate.

$\dfrac{a}{3b}$ for $a = 18$ and $b = 3$

Write using exponential notation.

$$10 \cdot 10 \cdot 10 \cdot 10 \cdot 10 \cdot 10$$

Solve for the given replacement set.

$$x^2 + x = 0\ \ \ \{0, 100, 1000\}$$

Evaluate.

$12 - x$ for $x = 5$

Calculate.

$$(7 + 2)^2$$

Write as an algebraic expression.

$b$ more than $a$

$\textbf{\textcolor{#4257b2}{Mathematical Reasoning}} \hspace{15pt}$ A student factored $ax + ay + bx + by$ as $a(x + y) + b(x + y)$. Another student factored the same expression as $x(a + b) + y(a + b)$. Are both answers correct, or is one of them incorrect? Justify your answer.

Evaluate.

$(3a^3)$ for $a = 5$

Factor.

$$8 + 16x + 40y$$