Evaluate each expression for x = 4 and give answers in simplest form. show your work

a)    

b)    

Step-by-step explanation:

The value given for x is 4

1) The given expression is :  

By solving the negative exponent, we get

Here, substitute x =4,

or,  

2) The given expression is :  

By solving the negative exponent, we get

Here, substitute x =4,

or,    

only 10/60 isn't equivalent

hope this : )

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