Which is the best estimate of the circumference of this circle? a. 1.5 unitsb. 9 unitsc. 3 unitsd. 30 units

B  9 units

C = πd ( where d is the diameter )

here r = 1.5 ⇒ d = 2 × 1.5 = 3

as an estimate, approximate π to 3

C = 3 × 3 = 9 ← is the best estimate

6, 10

9, -13

12, -21

18, -23

step-by-step explanation:

you just add 6 to the x-coordinate and subtract 10 from the y-coordinate.

she would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

i hope this answer you! if you have any further questions or concerns, feel free to ask! : )

step-by-step explanation:

mark brainliest!