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mrs. maxwell is buying pencils for her students. she has 3 classes of 28 students each. for valentine’s day, she wants to give each of her students 4 pencils. she can purchase packs of 18 pencils for $2.52. how many packs of pencils will mrs. maxwell need to purchase? justify your answer.

Mrs. Maxwell needs to buy 18.66 packs of pencil containing 336 pencils for 84 students.

Given that  

Mrs. Maxwell is buying pencils for her students.

She has 3 classes of 28 students each.

She wants to give each of her students 4 pencils.

She can purchase packs of 18 pencils for $2.52

Need to determine number of packs of pencils Mrs. Maxwell need to purchase.

Let’s first determine total number of students  

As there are 3 classes of 28 students each means

Number of students in 1 class = 28

=> Number of student in 3 classes = 28 x 3 = 84

Mrs. Maxwell wants to give each of her students 4 pencils.

So number of pencils required for 1 student = 4

=> number of pencils required for 84 student = 4 x 84 = 336

Given that number of pencils in one pack = 18  

So number of pack containing 336 pencils

So Mrs. Maxwell needs to buy 18.66 packs of pencil containing 336 pencils for 84 students.

y = 5x + 17

step-by-step explanation:

a perpendicular line will be the opposite reciprocal slope of the given equation.   the slope given is -1/5 so the opposite reciprocal is 5

find b:

7 = 5 (-2) + b

7 = -10 + b

17 = b

write equation

y = 5x + 17