each of four people shake hands once with each of the other three. how many hand shakes will there be

htryhyryhr

Step-by-step explanation:

6

Step-by-step explanation:

o o o o

3+2+1 = 6

go and ask your mom to you

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