42. An observer on the ground sites a plane at an angle of elevation of 41.2°. At the same time, a second observer 3000 m farther away along the same line of site measures the angle of elevation as 35°. How high is the plane? Round to the nearest 100 m. 35° 41.2° 3000 m

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.