Solve x2 − 7x = −13. a) x equals quantity of negative 7 plus or minus i square root of 6 all over 2 b) x equals quantity of negative 7 plus or minus i square root of 3 all over 2 c) x equals quantity of 7 plus or minus i square root of 6 all over 2 d) x equals quantity of 7 plus or minus i square root of 3 all over 2

The correct answer option is B) x equals quantity of negative 7 plus or minus I square root of 3 all over 2.

Step-by-step explanation:

We are given the following quadratic equation:

Taking the constant on the same side as the variable to get:

Since, it cannot be factorized so we will use the quadratic formula:

x =

Substituting in the values of a, b and c in the above formula to get:

x=

x = , x =

Therefore, the correct answer option is B) x equals quantity of negative 7 plus or minus I square root of 3 all over 2.

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