U4 Lessons 15,16,17,18

Amazon Seller A sells cookbooks at 9$/book, offers free shipping. How much do "n" cookbooks cost?

• 9n
• 9n+5
• n
• 3n

Amazon Seller B sells cookbooks at 9$/book, shipping costs 5$ flat. How much do "n" cookbooks cost?

• 9n
• 9n+5
• n
• 3n

Amazon Seller B sells cookbooks at p$/book, shipping costs 5$ flat. How much do "n" cookbooks cost?

• 9n
• 9p+5
• n
• 3n

Amazon Seller B sells cookbooks at p$/book, shipping costs "f" dollars flat. How much do "n" cookbooks cost?

• 9p+f
• 9p+5
• 9p
• 9f+p

K = C + 273.15 is a conversion from Celsius to Kelvin. Find the inverse function.

• C = K - 273.15
• C = K/273.15
• C = K + 273.15

A = 30B is a function. Find the inverse function.

• B = A/30
• B = 30A
• B = A - 30

C = 30D + 17 is a function. Find the inverse function.

• D = (C-17)/30
• D = (C/17) - 30
• D = (C - 17) / 30
• D = 30C - 17

Taylor swift gets a 30% cut based on n sales of her new album (100$ each). Her money earned is

• 30n
• 100n
• 3n
• 0.3n

The Baltimore Ravens kick Lamar and get someone new. He costs $50 million and $1 million extra per game (g games).

• He costs 50,000,000 + 1,000,000g
• He costs 5,000,000 + 1,000,000g
• He costs 5,000,000 + 10,000,000g
• He costs 50,000,000g + 1,000,000

L = 50,000,000 + 1,000,000g is a function. What's the inverse function

• g = (L - 50,000,000)/1,000,000
• g = (L - 1,000,000)/50,000,000
• g = (L - 50,000,000) - 1,000,000
• g = (L / 50,000,000)/1,000,000