Which equations represent a line with a slope of 3 and contains the point (−1, −8)? choose all answers that are correct.
a. −3x + y = −5
b. 3x + y = −5
c. (y – 8) = 3(x − 1)
d. (y + 8) = 3(x + 1)

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

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.

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?