Does any one know about coefficients and expressions havent done it in a while and im a little confused ..

Lindsay is creating a bridge out of dried pasta and glue. in her plans, she sketches the graph to determine the lengths of the noodles, in centimeters, needed for the arch to increase the length of the bridge in 1 centimeter increments.which function did lindsay use to create her design? f(x) = (x – 5)2 + 8 f(x) = –(x + 5)2 + 8 f(x) = 0.5(x + 5)2 + 8 f(x) = –0.5(x – 5)2 + 8

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !

Can you divide 25 into 4 equal groups? explain why or why not.