Unit 4 test: Expressions

What is the coefficient of $p$ in the expression $8 - 3p + p^2$?

Which expression means "six more than the product of $3$ and $n$"?

Evaluate $2x^2 - 5y$ when $x = -3$ and $y = 4$.

A kayak rental costs $12 plus $3 per hour. Write an expression for the cost of $h$ hours, then find the cost in dollars of a $5$-hour rental.

Which property does $7 \cdot \dfrac{1}{7} = 1$ show?

Which property does $(a + 4) + 6 = a + (4 + 6)$ show?

Use the properties of multiplication to find $5 \cdot (-13) \cdot 20$.

Simplify $7w - 3 - 10w + 8$.

Simplify $2x^2 - 4x + 6x^2 + x$. What is the coefficient of $x^2$ in the result?

Simplify $(3a + 2b) - (a - 5b)$.

Expand $-3(4 - 2t)$.

Simplify $5(y + 3) - 2(y - 4)$. What is the constant term of the result?

Factor $12x - 20$ completely.

A rectangle has length $2n + 3$ and width $n - 1$. Write and simplify an expression for its perimeter, then find the perimeter when $n = 5$.