Can someone please help me

Daphne has calculated the total cost of a meal to be $5. she wants to make 70 percent on each meal. what will be the cost of the meal after adding the percentage? a. $8.50 b. $7.14 c. $3.50 d. $14.00

Need some ! asap i need to figure out 3 major changes in bridges over time and why these changes to adapt to both improvements in technology and changing social links would also alot.

Which statement is true? select one: a. all art created in florence during the renaissance was commissioned by the medici family. b. without wealthy patrons, it is likely that many italian renaissance works would not have been created. c. religion was the driving force behind works created by leonardo and michelangelo. d. the public was responsible for determining whether an artwork was great.