Louis paid $42 for a dozen magazines with her annual and subscription to her favorite sport magazine. What is the unit cost for each magazine?(How many magazines did she subscribe to)

Please show work.

42 / 12 = ?

ericka rides her bike at a rate of 6 minutes per mile. how many minutes will it take her to ride 16 miles?

Use a proportion.

Cross multiply and solve for x.

6/1 = x/16
x = 96 minutes

Rafael asked 85 students what kind of pet they liked the most. Exactly 35% of the students said they liked dogs best. What was the total number of students who said they liked dogs best?

please show work

I did two problems for you. Now it's your turn.

I'll be glad to check your work.

To find the unit cost for each magazine, we need to know how many magazines Louis subscribed to.

Let's proceed step by step:

Step 1: Deduct the annual subscription cost from the total payment.
We know that Louis paid $42 for a dozen magazines, which includes the annual subscription cost. Let's assume the annual subscription cost is S dollars.

So, the cost of only the individual magazines will be $42 - S.

Step 2: Determine the quantity of magazines.
We also know that Louis paid for a dozen magazines, which means she bought 12 magazines in total.

Step 3: Find the unit cost.
Divide the cost of only the individual magazines by the quantity of magazines purchased:
Unit Cost = (Cost of individual magazines) / (Quantity of magazines)
Unit Cost = ($42 - S) / 12

Now, we need to know the value of the annual subscription, S, to calculate the unit cost accurately.