The graph shows the speed of sam’s car over time. which best describes what is happening in section c?

Can someone check my answer? you : )

1- identificar select the category that corresponds to each term. january 23 11: 59 pm unlimited attempts remaining grade settings 276-279 vocabulary list modelo fiesta quinceañera casada adolescencia viudo juventud navidad niñez vejez aniversario de bodas divorciado madurez cumpleaños soltera

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles