Find the value of each expression.

1. \(14.7 +28.9\)
2. \(\text-9.2 + 4.4\)
3. \(\text-81.4 + (\text-12)\)
4. \(51.8 + (\text-0.8)\)

Last week, the price, in dollars, of a gallon of gasoline was \(g\). This week, the price of gasoline per gallon increased by 5%. Which expressions represent this week’s price, in dollars, of a gallon of gasoline? Select all that apply.

Decide whether each table could represent a proportional relationship. If the relationship could be proportional, what would be the constant of proportionality?

1. Annie’s Attic is giving away $5-off coupons.

   original price	sale price
   \$15	\$10
   \$25	\$20
   \$35	\$30

2. Bettie’s Boutique is having a 20%-off sale.

   original price	sale price
   \$15	\$12
   \$25	\$20
   \$35	\$28

Match each written statement with a mathematical statement. All of these statements are true.