Question

I NEED HELP PEOPLE LAST TIME

Answer 1

29.

`f(x) = -x^2-7x-6`

As
`x \to \pm \infty`,
`y \to - \infty`.

This can be easily verified by looking at the graph (graph of a quadratic equation).

30.

The growth of a population is not linear, it's exponential.

31.

Exponential growth > polynomial, so
`y = 3^x`.

35.

`V(t) = 30\cdot (25)^{(t)/(20)}`

The question is asking V(t) for t = 40.

`V(40) = 30\cdot (25)^{(40)/(20)} \\~\\V(40) = 30\cdot 25^2 \\~\\V(40) = 30\cdot 625 \\~\\V(40) = 18750`

36.

The point of symmetry of a quadratic equation
`y = ax^2+bx+c` is at its vertice:

`V_x = (-b)/(2a)`

`V_x = (6)/(2)`

`V_x = 3`

The line is x= 3.