multiply 12.50 by 16% to find the new cost
12.50 * 1.16 = 14.50 per student
14.50 * 50 = $725
Answer:
5. 49, (x+7)²
6. 36, (x-6)²
7. 81/4, [x-(9/2)]²
Step-by-step explanation:
5. x² + 2(x)(7) + 7² = (x + 7)²
6. x² - 2(x)(6) + 6² = (x - 6)²
7. x² - 2(x)(9/2) + (9/2)² = (x - 9/2)²
Answer:
237/28
Step-by-step explanation:
4 5/7=33/7
3 3/4=15/4
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33/7+15/4=132/28+105/28=237/28
45 people are present
Explanation: 60x1/4=15
60-15=45