I will mark Brainliest for first and correct answer. PLEASE NO LINKS Mark checks the cost of pens at several stores to determine the best deal. Which choice gives the lowest cost per pen?
a) $7 for a pack of 5 pens
b) $15 for a pack of 10 pens
c) $18 for a pack of 15 pens
d) $48 for a pack of 30 pens

Please also explain how you got the answer even better the working

c) $18 for a pack of 15 pens

Step-by-step explanation:

calculate the cost for 1 pen then compare

a) 7 ÷ 5 = 1.4

b) 15 ÷ 10 = 1.5

c) 18 ÷ 15 = 1.2 (has the lowest cost for a pen)

d) 48 ÷ 30 = 1.6

3.how is solving radical equations different than solving linear equations?

step-by-step explanation:

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

hope this you and

step-by-step explanation: