Answer:C 5a^2 +70a +240
Step-by-step explanation:
Answer: 
<u>Multiply</u>
60%×1200=720
Note: When finding the percent of a number always multiply the percent times the number.
20% because 9 divided by 45 is 0.2 which is 20%

is a quadratic function, so its graph is a parabola.
Notice that the coefficient of x is 0, this always means that the axis of symmetry is the y-axis.
That is, the vertex of the parabola is in the y-axis, so the x-coordinate of the vertex is 0.
for x=0, y=-1. So the vertex is (0, -1)
The coefficient of

is negative. This means that the parabola opens downwards, so the vertex is a maximum.
Answer: (0, -1) , maximum (none of the choices)
Answer:
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Good luck! Hope this helped :)