Understanding Expressions Answers

3. There are no exponents to evaluate.4. Multiply and divide from left to right. 42 + 6.5X 42 – 3.56 + 0.56 – 0.5

2. Evaluate within parentheses. 42 ÷ 7 – 0.542 ÷ 7 + 0.542 ÷ 7 – 0.0542 ÷ 7 + 0.05

3. There are no exponents to evaluate.4. Multiply and divide from left to right. 42 + 6.542 – 3.56 + 0.56 – 0.5

5. Add and subtract from left to right. 5.56.538.548.5

A diver begins at sea level and dives down 200 feet. He ascends at a steady rate of 12 and one-third feet per minute for 4.5 minutes. Which of the following numerical expressions represents the final depth of the diver?

Term: X 8z, ½y, 7.78z, ½y, -7.7 X -8z, ½y, 7.7 ✔ -8z, ½y, -7.7

The coefficients are -1 and 3-1 and 1/31, 12, and 3X -1, 12, and 1/3.

Variable: zy✔ y, zx, y

Coefficient: 8, ½✔ -8, ½8, ½, 7.7X -8, ½, 7.7

Constant: ✔ –7.7X -8, –7.7X ½, –7.7-8, ½, –7.7