The area of the pre-image is 300 square units
Area of triangle
A triangle is a 2D shape that has a 3 sides and angles. The formula for calculating the area is expressed as;
Area= 1/2 * bh
where
b is the base of the triangle
h is the height of the triangle
Given the following parameters
Area of triangle = 75 square inches
If the area is increased with with a scale factor of 1 to 4, then
Area of pre-image = 4 * 75
Area of pre-image = 300 square units
Hence the area of the pre-image is 300 square units
Learn more on scaling here: https://brainly.com/question/25324744
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