Calculate the length of the diagonal AB

AB =  cm

Step-by-step explanation:

The diagonal of the bottom square is the hypotenuse of two right triangles with legs 5 and 5

So, the length of that diagonal, say x,  of a 45-45-90 triangle where x is the hypotenuse is x =

Now that diagonal is a leg of the right triangle where AB is the hypotenuse and 5 is the length of the other leg.

So,  =   + 25

                                =  50 + 25

                               = 75

Therefore   AB = =

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 agree because i see the other persons thinking is clear