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Choose the correct slope of the line that passes through the points (1, -3) and (3, -5)

Find the value of the variable and the length of each secant segment.

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10