Which equation represents the total cost, y, for x hours of student ski lessons and a lift ticket? Lift Tickets: Student; $30

Adult; $50

Ski Lessons: Student; $20 an hour

Adult; $40 an hour

Possible Answers:

y = 30x + 20

y = 20x + 30

y = 20x

y = 30x

btw this is on I-Ready

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¯¯¯¯¯¯¯¯)?