In heather's physics class, she had to solve the equation 7=12at2+ut for u. which equation correctly solves for u?

B (7 -1/2 at^2)/t = u

Step-by-step explanation:

7 = 1/2 at^2 + ut

subtract 1/2 at^2 from each side

7 -1/2 at^2 =  1/2 at^2 + ut - 1/2 at^2

7 -1/2 at^2 = ut

divide by t

(7 -1/2 at^2)/t = ut/t

(7 -1/2 at^2)/t = u

answer:   14

step-by-step explanation:          

pu you stank bo u ugly bo lol

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