Check my answer for a trig question?

which value best approximates the length of c in triangle abc where c=90°, b=12, and b=15°?

a. c≈3.1058
b. c≈12.4233 (my answer)
c. c≈44.7846
d. c≈46.3644

If δmtv is reflected across the y-axis, what are the resulting coordinates of point m? a) (-2, 5) b) (-5, 2) c) (5, -2) d) (-2, -5)

What is the solution of the systems of equations? y=2/3x+3 x=-2

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.