First, find the relationship of the circumference to its diameter by finding that the length of the diameter wraps around the length of the circumference approximately π times. Use this relationship to writing an equation showing the ratio of circumference to diameter equaling π. Then rearrange the equation to solve for the circumference. Substitute the diameter for 2 times the radius
You need to know these two formulas:

For example,

Answer:
3(4+5)
Step-by-step explanation:
just fill in the numbers for x and y
Answer:
A. Slope = 4 and y-intercept = 3