3bananas are to be selected from a group of 9. in how many ways can this be done?

84

Step-by-step explanation:

The formula to calculate the number of ways to select x things from n things is given by :-

Now, if 3 bananas are to be selected from a group of 9, then the number of ways  will be  

Hence, the  number of ways to select 3 bananas from a group of 9 =84

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step-by-step explanation:

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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