8.2 Function Rules

Which of the following is NOT an arithmetic sequence? 

• 7, 14, 21, 28...
• 1, 5, 9, 13...
• 2, 4, 6, 8...
• 4, 8, 16, 32...

A pizzeria charges $12 per pizza plus an additional $3 for delivery. Which equation represents the cost of having any number of pizzas delivered?

• c = 12p
• c = 3p
• c = 12p + 3
• c = 12 + 3p

The sequence begins 5, 10.... If this is a geometric sequence, what would the next three terms be? 

• 20, 40, 80
• 15, 20, 25
• 15, 30, 45
• 15, 25, 30

Describe the value of each term as a function of its position. Write a function rule to find the value of the n-th term. 

• n(6)
• n+6
• 6n
• None of these

The function rule to find the value of the n-th term is 6n. Find the value of the fifteenth term in this sequence. 

• 90
• 300
• 21
• None of these

Write the function rules that best represents Myles' age in terms of Molly's age where m represents Molly's age. 

• 2m + 1
• 2m + 3
• m + 3
• m + 1

The function rule that best represents Myles' age in terms of Molly's age (m) is m+3. What will be Myles' age when Molly is 48 years old? 

• 45
• 49
• 51
• None of the above

The sequence begins: 0.33, 0.66, 0.99....This sequence is _____________. 

• arithmetic because you add to find the value of the next term.
• arithmetic because you multiply to find the value of the next term. 
• geometric because you add to find the value of the next term.
• geometric because you multiply to find the value of the next term.