Determine whether a quadratic model exists for each set of values. if so, write the model.
f(0)=5, f(2)=3, f(-1)=0

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

Which expression is equivalent to (4 +6i)^2? ? -20 + 48i 8 + 12i 16 - 36i 20 + 48i

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2