3. what are the velocity and acceleration function vectors for a particle traveling in the xy-plane with position vector r(t)=(2+t^2, 3t)? a)v(t)=(2t^2, 3t) ; a(t)=(2t, 3) b)v(t)=(2t, 3) ; a(t)=(2, 0) c)v(t)=(2t, 3t) ; a(t)=(2, 3t) d)v(t)=(2+2t, 3) ; a(t)=(4, 0)

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer