Value mart is advertising a back to school sale on pencils. a pack of 30 sells for $7.97,whereas a 12 pack of the same brand cost for $4.77.which is the better buy? how do you know ?

12 pack of the same brand cost for $4.77.

Step-by-step explanation:

Given,

In first pack,

Number of pencils = 30,

Cost of the pack = $ 7.97

So, the number of each pencil = ≈ $ 0.2656

In second pack,

Number of pencils = 12,

Cost of the pack = $ 4.77

So, the number of each pencil = ≈ $ 0.3975

∵ 0.3975 > 0.265

Hence, second pack is better to buy.

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}