It would prolly be (b=-1.6).
The answer is a) 35 because if you set 21/49 and 15/h equal to eachother and cross multiply it should lead you to 21(h) = 15(49) which then equals 21h = 735 and if you divide 21 on both sides you should get h = 35
I’m sorry I don’t get what your asking.
Your stating if you purchase 20 pens for 55 dollars how much money your making? Why would you be making any money when your buying items and not selling them.

First, convert the percentage to a decimal. You can do this by moving the decimal place two places to the left.

Now, simply multiply that decimal by
using a calculator.

Answer:
Step-by-step explanation:
Ok guys I’m really confused