G(x)=1/3x+x what is the average of change of g over the interval [-2,-1]

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document

Which of the following statements is a true conclusion that can be made from the scaled bargraph?

Jamie has 7/10 of a pound of chicken to cook for dinner if she's going to put the chicken in between three people how much chicken will each person get