The production cost to make 10 shirts is modeled by heather expression 1.8y+5.5, where y represents the number of meters fabric needed to make the shirts. Where expression represents the production cost for one shirt? Please HELP

A. 0.18y+0.55
B. 0.18y+5.5
C.1.8y+0.55
D.18y+55y

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?

Alice is paying her bill at a restaurant. but tax on the cost of a male is 5%. she decides to leave a tip 20% of the cost of the meal plus the tax