If 5 pens weigh 9.61 grams, how many grams will 9 pens weigh?

Afamily of five rents a kayak and splits the total time, k, equally. each family member spent less than 25 minutes kayaking. which values can be used to complete the math sentence below so that it accurately represents the situation? intro done

3.4a=57.8 what is the the value of a

Find a third-degree polynomial equation with rational coefficients that has roots -2 and 6+i