The height of a kicked football can be represented by the polynomial -16t^(2) + 20t + 3 where t is the time in seconds. find the height (in feet) of the football after 1.1 seconds.

All you do is substitute 1.1 for t:

Height =  -16 * (1.1² ) + 20 * 1.1 + 3    

           = 5.64 ft

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