What is the scale factor of 5.68 and 3.98 and 2.84

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

When is g(x) = 0 for the function g(x) = 5.23x + 4?