The a value of a function in the form f(x) = ax2 + bx + c is negative. which statement must be true? the vertex is a maximum. the y-intercept is negative. the x-intercepts are negative. the axis of symmetry is to the left of zero.

A  is the right answer

The vertex is a maximum

The a value of a function in the form f(x) = ax2 + bx + c is negative

The value of 'a' represent whether the parabola opens up or down

When 'a' is positive then parabola opens up

When 'a' is negative then parabola opens down

The vertex is minimum when parabola opens up

The vertex is maximum when parabola opens down

So answer is : The vertex is a maximum

175

step-by-step explanation:

2 inches x 10 miles = 200 miles - 3 inches = 175

-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation