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.
Norma cut a triangle out of construction paper for an art project.The area of the triangle is 84.5 square centimeters. Select the correct values to complete the formula below to find the height of the triangle.