Target is advertising a Back to School sale on pens. A pack of 30 sells for $8.90, whereas a 15-pack of me same brand costs $4.39. Which is the better buy? How do you know?

Well you don't really need to do math. You have to think half of 30 is 15. So then you would multiply 4.39 times 2 and you get 8.78. So the 15 pack is a better deal.

Step-by-step explanation: Hope this helps! Feel free to ask any other questions in the comment section :)

answer: standard form is ax^2 + bx + c = 0

step-by-step explanation:

standard form is ax^2 + bx + c = 0

(2x + 1)(x - 2) = 0

distribute to get into standard form

2x^2 - 4x + x - 2 = 0

2x^2 - 3x - 2 = 0

a = 2, b= -3, c = -2

a is your answer

answer: the first one

step-by-step explanation: use a calculator and divide the minutes by the dollars.