The sum of the angles of a triangle is 180°. If one angle of a triangle measures x and the second angle measures (4x + 15)°, express the measure of the third angle in terms of x. Simplify the expression.

the third angle= 180-x-(4x+15)

Step-by-step explanation:

if we subtract the two other angles the result will be the measure of the last one

the linear relationship that represents a variation in direct proportion is the linear function that varies according to the numbers of its domain, for example the cost of producing x number of items can be represented in direct proportion by f (x) = mx + b, where m is the constant of proportionality, x the number of articles produced and b the fixed cost