As a member of a music club, you can order CDs for $14.99 each. The music club also charges $4.99 for each shipment. The express
ion 14.99n + 4.99 represents the cost of n CDs. Find the total cost of ordering 7 CDs. (25 points for this question :3)
1 answer:
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1. Subtract 8 from both sides
2. Simplify to get x= -23
2. Simplify to get x= -23
Answer:
The train need to leave Portland at 03:27 am
Step-by-step explanation:
step 1
Find out how long it takes the train to travel from Portland, Oregon, to Los Angeles, California
Remember that
The speed is equal to divide the distance by the time
so
The time is equal to divide the distance by the speed
Let
s ---> the speed in miles per hour
d ---> the distance in miles
t ---> the time in hours
we have
substitute
step 2
Adds 30 minutes (time it takes to get from the train station to her aunt's house)
Remember that
Convert to minutes
step 3
Remember that
Convert to minutes
Subtract 993 minutes from 1,200 minutes
Convert to hours+minutes
so
therefore
The train need to leave Portland at 03:27 am