Answer: 7. 2n + 162 = 424
8. 3 hours
9. K ≥ 18
7. The number of Delicious apples sold is represented by n. Because they sold 162 more Empire apples than Delicious apples, the number of Empire apples sold can be represented by (n + 162). The total number of apples sold was 424, so the equation is Delicious apples + Empire apples = 424.
![n + (n + 162) = 424\\\\n + n + 162 = 424\\\\2n + 162 = 424](https://img.qammunity.org/2020/formulas/mathematics/middle-school/s5bwnwdrxcyt8pclphvgg735y75zu0i0ds.png)
8. The equation is given for this problem. Simply solve for h in the equation.
![55h + 275 = 440\\\\55h = 165\\\\h = 3](https://img.qammunity.org/2020/formulas/mathematics/middle-school/2kcnxgq7p9qn1xfnj8fnkn91bv05dvnjjc.png)
9. The term "at least" generally means greater than or equal to. Thus, since Suzy scored at least 18 points, she scored 18 or more points.
![K \geq 18](https://img.qammunity.org/2020/formulas/mathematics/middle-school/5ag5691ha6hs8vpjjdqa6a2e0c4xtsj0ad.png)