Algebra-1 Problems

2.9 Write an Equation


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1.

When Anne bought a used car, it aleady had 7800 miles on it. She drove the car 900 miles in the first month after purchasing it. Write an equation in "x" for the mileage of the car one month after Anne bought it.

\begin{equation}x=7800+900\end{equation}

2.

On one tank of gas, Anne can drive 69 times from home to work and back. The gas tank in her car holds 3 gallons. Write an equation in 'x' for the number of miles per gallon her car gets if the distance from home to work and back is 8 miles.

\begin{equation}x=\frac{69 \times 8}{3}\end{equation}