I’ll give brainliest help

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.

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?

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?