What is the angle of a in the above scalene triangle?

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¯¯¯¯¯¯¯¯)?

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

For the function f(x)=1/x-2 +5 notice that a=1, h=2, k=5 what are the vertical and horizontal asymoptote