It is the circle which has its radius a 0units and it can also be called as a point circle.
You would do $12*16 to see what they have to charge for the dinner
To find the answer, you need to solve for b.
2(2b + 3) = 12 divide both sides by 3
2b + 3 = 6 divide both sides by 2
2b = 3 subtract 3 from both sides
b = 1.5 divide both sides by 2
b = 1.5 satisfies the equation. if you plug 1.5 in, you get that the equation is true.
-19.6 m/s
Do you need the math as well?