You need to add a picture in order for others to understand what you are referring to.
Answer: 40 + 0.21t
Step-by-step explanation:
If t is the number of texts last month and the initial fee for each month is $40 then you will have the expression 40+0.21t
Pi r² is circle's area expression.
So the r is radius,.
Answer:
tip = $23.55
Step-by-step explanation:
156.98 x 0.15 = 23.55
