Which statement best describes the function below?

f(x)= x3 - x2-9x +9

It is a many-to-one function.

Step-by-step explanation:

it is a function because for every x values there is only one correspondent y value. Therefore it pass the vertical line test. So, option A and C are not correct. In the figure attached, a plot of the function can be seen. It is notice that different x values gives the same y value. In consequence, it is a many-to-one function. One-to-one functions are those in which every y value correspond to exactly one x value.

d) 48

step-by-step explanation:

16,32,48,64,80,96,112,128,144,160,176,192,208,224,240,256,272,288,304,320,336

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt