A textbook costs $65.49 before tax. The tax on the textbook is 6.5%. What is the total cost of the textbook?

Round your answer to the nearest cent.

Enter your answer in the box.

Step-by-step explanation:

the tax will cost

65.49*6.5=4.26

the total price of the book is

65.49+4.26=69.75

31 calls

Step-by-step explanation:

This method of information dissemination forms a tree diagram with a common factor of 2 for each next day.

On Monday, Lori made a call.

By noon on Tuesday (the next day), two calls were made by the initial member.

By noon on Wednesday, four calls would be made by the two members.

By noon on Thursday, eight calls would be made.

By noon on Friday, sixteen calls would be made.

Therefore,

total calls made by Friday afternoon = 1 + 2 + 4 + 8 + 16

                                           = 31