Answer:
22.50
Explanation:
1. admission price + coupon amount = regular admission price
2. a= regular admission price
3. 6(a-5)=105
4. 6a-30=105
5. isolate the variable: add 30 to each side
6. 6a=135
7. divide both sides by 6 = 135/6= 22.50
8. regular admission price = $22.50