Unit 8 Review

All real numbers greater than or equal to $$-1$$

All real numbers less than or equal to $$3$$

All real numbers less than or equal to $$-3$$

All real numbers greater than or equal to $$-7$$

There is no profit between 250 songs and 3200 songs

The profit is maximum at 1775 songs

There is no profit at 250 songs and 3200 songs

There is negative profit at less than 250 songs and more than 3200 songs

$$j\left(x\right)=x$$ and $$k\left(x\right)=x+3.3$$

$$j\left(x\right)=x^2$$ and $$k\left(x\right)=x^2-3.3$$

$$j\left(x\right)=x^2$$ and $$k\left(x\right)=3.3x^2$$

$$j\left(x\right)=x^2$$ and $$k\left(x\right)=x^2+3.3$$

$$y=\frac{1}{3}(x+2)^2-4$$

$$y=-\frac{1}{3}(x+2)^2+4$$

$$y=\frac{1}{3}(x-2)^2-4$$

$$y=-\frac{1}{3}(x-2)^2+4$$

$$f\left(x\right)=x^2+x-8$$

$$f\left(x\right)=-x^2+x-8$$

$$f\left(x\right)=-x^2-x+8$$

$$f\left(x\right)=x^2-x-8$$

The zeros, –5 and 8, can be found when $$0=-\left(x+5\right)\left(x-8\right)$$

The zeros, –8 and –5, can be found when $$0=-\left(x+8\right)\left(x+5\right)$$

The zeros, 5 and 8, can be found when $$0=-\left(x-5\right)\left(x-8\right)$$

The zeros, –8 and 5, can be found when $$0=-\left(x+8\right)\left(x-5\right)$$

–4.74

Domain: $$-7\le x\le2$$

Range: $$-3\le y<2$$

Domain: $$-3\le x<2$$

Range: $$-3<y\le2$$

Domain: $$-3<x\le2$$

Range: $$-3\le y<2$$

Domain: $$-3\le x<2$$

Range: $$-7\le y\le2$$

The graph of k(x) is narrower than the graph of j(x) and translated up ten units.

The graph of k(x) is narrower than the graph of j(x) and translated down ten units.

The graph of k(x) is wider than the graph of j(x) and translated up ten units.

The graph of k(x) is wider than the graph of j(x) and translated down ten units.