Answer:
Check Explanation
Explanation:
The question isn't complete as each amount to be matched with the expression that represents its situation isn't provided
We obtain a general formula for the expressions and move forward from there.
Cost of one ticket = t dollars
Normal cost of buying n tickets for (n<10) = nt dollars
Normal cost of buying 10 tickets = 10t
But there's a discount of 5%, hence, the discount = 5% × 10t = 0.5t
Cost of buying 10 tickets = 10t - 0.5t = 9.5t dollars
Normal cost of buying n tickets for (10 < n < 20)
= (Cost of buying 10 tickets) + (cost of buying the extra tickets)
= 9.5t + (n - 10)t = nt + 9.5t - 10t = (nt - 0.5t) dollars
Cost of buying 20 tickets
= 20t - (2)(0.5t) = 20t - t = 19t dollars
Cost of buying (20 < n < 30) tickets
= nt - (2)(0.5t) = (nt - t) dollars
So, generally, cost of buying an exact k-multiple of 10 = (10kt) - (k)(0.5t) = 10kt - 0.5kt = (9.5kt) dollars
And the general price of buying n tickets, where n is associated with a k-multiple of 10 = nt - (k)(0.5t) = (nt - 0.5kt) dollars.
Basically, it's a discount of 0.5t dollars for every 10 tickets bought!
With this explanation and general formulas provided, we should be able to match any amount given with the expression that represents its situation. Thank you!
Hope this Helps!!!