Tell me why do I feel sad should I give him away or feel this bad​

Susie wants to take her friend out for lunch. she wants to spend $9.75 each person. how much will she spend in all.

Rose and andrew are financing $128,000 to purchase a condominium. they obtained a 15-year, fixed-rate loan with a rate of 5.05%. they have been given the option of purchasing up to four points to lower their rate to 4.81%. how much will the four points cost them?

David pays a 20% income tax on his $2,100 salary. how many dollars is the tax? show work