How do i change mixed numbers into improper fractions

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

Sketch the vector field vector f( vector r ) = 8vector r in the xy-plane. select all that apply. the length of each vector is 8. the lengths of the vectors decrease as you move away from the origin. all the vectors point away from the origin. all the vectors point in the same direction. all the vectors point towards the origin. the lengths of the vectors increase as you move away from the origin.