Describe the graph of the function. y = 2x2 + 12x – 15

Step-by-step explanation:

To describe the graph of the function y=.

The function y= is a quadratic function. All quadratic function have a parabolic curve. The direction to which the parabola opens is determined by the coefficient of , If the coefficient of , is positive as in the case above, the graph forms a downward "U" shape.

The solutions of the function y= are 1.06 and -7,06, This means the graph intersects the x-axis at points 1.06 and -7.06.

To determine the axis of symmetry of a downward facing parabola,

We use the equation:

a=2, b=12.

Axis of Symmetry=

The minimum point is the value of y at the axis of symmetry.

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step-by-step explanation:

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answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %