1) a student uses the substitution method to solve the system of equations below algebraically.

2x - y = 5
3x + 2y = -3

which equivalent equation could be used?

(a) 3x + 2(2x - 5) = -3
(b) + 2(5 - 2x) = -3
(c) 3(y + 5/2) + 2y = -3
(d) 3(5/2 - y) + 2y = -3

Will mark brainliest if you answer ! the taco shop sold 198 lunches friday. this number is 3 more than 3 times the number they sold monday. let n represent the number of lunches sold monday. which equation shows an equality between two different ways of expressing the number of lunches sold on friday? a. n – 3 = 198 b. 3n – 3 = 198 c. 3n + 3 = 198 d. n + 3 = 198

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?