Finish the steps below to write a quadratic function for the parabola shown.
11
Use the vertex form, f(x) = a(x - h)2 + k, and
substitute in the values for h and k.
f(x) = a(x - 5)2 + 3
2. Use another point and substitute in values
for x and fx). Solve for a.
5 = a(6 - 5)2 + 3
3. Write the function, using the values for h, k,
and a
The function is f2) =
100-
2 +
+

Trent wants to buy 2 packs of trading cards for 3 dollars each. the trading card packs that trent normally buys tend to come in packs of 6, 10, 12, or 15 cards. after selecting 2 packs, trent found that the first pack of cards cost 25 cents per card, and the second pack cost 30 cents per card. trent uses this information to write the equations below in order to compare c, the number of cards in each pack.