23. The table shows the areas of a triangle where the height of the triangle stays the same but the base changes. What expression can be used to find the area of a triangle that has a height of 7 units and a base of x units? Explain your reasoning. Height (units) Areas of Triangles Base (units) Area (square units) 7 3 10/1 72 7 7414 7 5 1711/13 7 X ?​