Step 1:

Lawrence has two part time jobs one at a movie theater and one at a pet store.

He last week, he worked hours at movies and hours at pet store was .

He the week before he worked hours at movies and hours at pet store was .

(a)

Find the lawrence earns per hour at the pet store.

Let represents amount per hour at movie theater.

Let represents amount per hour at pet store.

Since, The equations are

First equation can be written as .

Second equation can be written as .

Solve the two equations.

Substitute in any equation to find -value.

\ \ \ \ He makes at the movies per hour and at the pet store per hour.

(b)

Find how many hours is needed to make at least

He works hours at the pet store.

Let represents number of hours needed.

The equation is . \ \ \ \ Substitute in the above inequality.

He has to work at least hours at the movies.

Solution:

(a) He makes at the movies per hour and at the pet store per hour.

(b) He has to work at least hours at the movies.