A pizza company uses the equation C= 15n to calculate the cost (C) of buying n number of pizzas. A) What is the constant of proportionality in this equation?
B) What information does the constant of proportionality provide you?

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¯¯¯¯¯¯¯¯)?

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

M.xyz =radians. covert this radian measure to its equivalent measure in degrees.