Compute. show your work. (5 2/3)^2 -(4 1/3)^2

Step-by-step explanation:

First convert the mixed fractions to improper fractions.

We can use the identity a² - b² = (a +b)(a - b)

Here a = 17/3 and b = 13/3

We can add & subtract as they have common denominators.

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

i believe the answer is the polygon, heptagon.