Can somebody who knows how to find the rates and ratios pls answer these word problems thanks:DDD

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 do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

What does x = in this equation x+3+2x=x+5