-11b+7=40 how do we solve for b?

We want to find the unknown value b in the following equation

-11b + 7 = 40

Since both sides are the same we can substract 7 both sides and it will be true

-11b + 7 - 7 = 40 - 7

-11b + 0 = 33

-11b = 33

We want to have just b in one side of the equation, we can divide both sides by -11, since they are equal:

-11b = 33

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

  the correct choice is marked

step-by-step explanation:

the first two graphs show multiple turning points. the last graphs matches the description in every detail.