Evaluating Algebraic Expressions, given values WP: Evaluate Algebraic Expressions

To EVALUATE means to FIND THE VALUE OF THE EXPRESSION when the value of the variables are known. FIRST – replace the variables with the known (given) value. THEN – follow the Order of Operations.

1) Evaluate for j = 8 and k = 12 First – replace the variables with the given values. Use the Order of Operations to find your answer. REDUCE

2) Evaluate for x =4, y = 4, z = 2 First – replace the variables with the given values. Use the Order of Operations to find your answer.

3) Evaluate for x = 3, y = 2 ½ , z = ½ First – replace the variables with the given values. Use the Order of Operations to find your answer.

Word Problems: Formula Replace n Solve 4. The cost of a school banquet is $75 + 12n, where n is the number of people attending. What is the cost for 83 people? Formula Replace n Solve

Formula Replace s Solve 5. An employee who receives a weekly salary of $200 and an 8% commission is paid according to the formula p = 0.08s + 200, where p represents the total amount earned weekly and s is the total weekly sales. Find the earnings for a week with $3818 total sales. Formula Replace s Solve

Formula Replace x Solve 6. Imagine that you owned a T-shirt business. The cost of making the designs and buying the T-shirts is $325. In addition to these one time charges, the cost of printing each shirt is $1.75. The average cost per T-shirt for the business to manufacture x T-shirts is given by the following formula. Find the average cost per T-shirt when x is 100. Formula Replace x Solve