To solve this problem, we will complete the inequality in Part A and then calculate the minimum number of shirts in Part B.
Part A: Completing the Inequality
The band needs at least $1,150 to cover expenses, and they have already saved $700. This means they need to earn at least:
\[ 1,150 - 700 = 450 \text{ dollars} \]
They earn a profit of $7 per shirt, so the amount they earn from selling \( n \) shirts is \( 7n \).
The inequality representing the minimum number of shirts, \( n \), that they must sell to earn at least $450 is:
\[ 7n \geq 450 \]
Now, we place the correct tiles in the blanks:
7 [n] [≥] 700 [+] 1,150
Part B: Calculating the Minimum Number of Shirts
To find the minimum number of shirts, we will solve the inequality:
\[ 7n \geq 450 \]
Dividing both sides by 7:
\[ n \geq \frac{450}{7} \]
Calculating that:
\[ n \geq 64.2857 \]
Since the band cannot sell a fraction of a shirt, we round up to the next whole number:
\[ n \geq 65 \]
Thus, the minimum number of shirts the band must sell is 65.
Final Answers:
- Part A: 7 [n] [≥] 700 [+] 1,150
- Part B: 65 shirts