Two families meet at the park at 10: 00am. each family uses a different way of transportation to get there. the gonzalez family leaves at 9: 00am and drives 90 km on a highway. the rivera leave at 9: 30am and ride the train 30km. what is the average speed for each family’s trip? which family travels at the faster speed?

carla slowed down in the beginning of her trip, stopped, and then sped up

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.

does anyone know or what?