Why does cube root 7 equal 7 to the 1/3 power

Step-by-step explanation:

Here's how you convert:

 The little number outside the radical, called the index, serves as the denominator in the rational power, and the power on the x inside the radical serves as the numerator in the rational power on the x.

A couple of examples:

It's that simple. For your problem in particular:

is the exact same thing as

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

is there supposed to be a diagram or a graph for this one? ?

step-by-step explanation: