Describe the transformation that changes triangle abc to triangle a'b'c

Customers at an ice-cream shop took a survey .the results showed that 144 customers rated the shop as being "very satisfactory ."this number represented 45%of the total nunber of customers who took the survey

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Astock has a 25% probability of increasing by $10 and a 75% probability of decreasing by $5. what is the stocks expected increase or decrease?