Circle a and circle b, which are pictured above, have the same center. Which equation can be used to find the area of circle a?

a
A = (pi)x2²

b
A =(pi)x6²

c
A = (pi)x8²

d
A = (pi)14²

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b.you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c.you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d.you spend $5 plus $10 per week until you have less than $45.

I'm confused on this could anyone me and show me what i need to do to solve it.

Find the equation of a line that is perpendicular to line g that contains (p, q). coordinate plane with line g that passes through the points negative 3 comma 6 and 0 comma 5 3x − y = 3p − q 3x + y = q − 3p x − y = p − q x + y = q − p