maths

1. Three less than five times   an unknown number is 12. Find the unknown number.

Show your work for each   of the following steps:

Step 1. Set up a variable dictionary.

Step 2. Set up an equation.

Step 3. Solve the equation.

Step 4. Answer the question with a sentence.

Step 5. Look back.

2. Juanita’s scores on her   first four quizzes are 87, 85, 94 and 91. What must Juanita score on her next   quiz to average 90 for all five quizzes?

Show your work for each   of the following steps:

Step 1. Set up a variable dictionary.

Step 2. Set up an equation.

Step 3. Solve the equation.

Step 4. Answer the question with a sentence.

Step 5. Look back.