Algebra-1 Problems

3.10 Compound Phrases to Algebraic Expressions


Problem #

Problem Statement

Problems Similar To

1.

Write an expression for the sum of two consecutive integers, the first being 'x'.

\begin{equation}x+x+1\end{equation}

2.

Write an expression for the sum of two consecutive even integers, the first being the 'x'th positive even integer.

\begin{equation}2x+2x+2\end{equation}

3.

The local bank pays 9% yearly interest on deposits. The interest is added into the account at the end of the term. How much money should be invested at the beginning of the year in order to have $\$640081/100$ at the end of a year?

\begin{equation}x+x \times \frac{9}{100}=\frac{640081}{100}\end{equation}

4.

Find the simple interest earned after 7 years on $\$1900$ invested at 19% annual interest rate.

\begin{equation}\frac{1900 \times 19}{100} \times 7\end{equation}

5.

Ms. Miller currently owes $\$5280$ simple interest on a loan of $\$8800$ at an annual interest rate of 12%. How long has she had the loan?

\begin{equation}5280=\frac{8800 \times 12}{100} \times x\end{equation}

6.

A triangle has sides: x ft, (x+8) ft and 9x ft. If the perimeter of the triangle is 118 ft, solve for x.

\begin{equation}x+x+8+9x=118\end{equation}

7.

A rectangle has one side at (x+6)ft and the other side at 2x ft. If the perimeter is 72 ft, solve for x.

\begin{equation}2(x+6+2x)=72\end{equation}