Question

Will mark brainliest plz help and include an explanation.

Answer 1

Answer:

The inequality is : "x < 23"  which agrees with answer "D" in your list

Step-by-step explanation:

Notice that the number of cookies that Susan bakes is the unknown "x".

Since her sister bakes 24 more cookies than what susan does, then the sister makes:

Sister = x + 24

Let's now write the number of cookies that both bake which should be the addition of both quantities: x (what Susan bakes) plus "x+24" (what her sister makes): x + x + 24 = 2 x + 24

Now we write in math terms that this expression should be less (<)  than 70 - Notice that the problem says "less than 7", and not "less than or equal 7", so the strictly less than symbol applies:

2 x + 24 < 70

and work to isolate "x" on one side of the inequality, by first subtracting 24 from both sides:

2 x < 70 - 24

2 x < 46

and then dividing both sides by "2" to leave just "x" on the left:

2 x / 2 < 46 / 2

x < 23