1. Chris works at Baskin Robbins and gets a 50% employee discount. He knows that if he orders s scoops with t toppings, his total cost can be found using this expression: 0.50(2s + 1) What is the total cost for Chris and his friends to order 10 scoops with 15 toppings?

2. Lindy works at a pizza restaurant and gets a 10% employee discount. She knows that if she orders d drinks and a medium pizza with t toppings, her total cost can be found using this expression:
0.90(2.25d + 1.40t + 6)

What is the total cost for Lindy and her friends to order 4 drinks and a medium pizza with 3 toppings?

3. Jenn works at a pizza restaurant and gets a 25% employee discount. She knows that if she orders d drinks and a medium pizza with t toppings, her total cost can he found using this expression:
0.75(3d + 2t + 10)

What is the total cost for Jenn to order 2 drinks and 1 medium pizza with 0 toppings?

(Show your work!)