What is the circumference of a circle with a diameter of 5 feet? Use 3.14 for pie.

How do you answer this question? (step by step)

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

Which table represents a linear function? i'll give brainliest to first answer ^'^