Help which of the following sets of ordered pairs represent a function?

What is the approximate total length of iron edging needed to create the square frame and the two diagonals?

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a.the profit when the unit price is equal to 0b.the unit price(s) when the profit is equal to 0c.the profit when the unit price is greatestd.the unit price(s) when profit is greatest

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.