Understanding and applying sequences

The pattern in the image models a quadratic relationship. How many square will there be at stage 4?

• 9

• 15

• 12

• 11

Harold took a total of 8 quizzes over the course of 2 weeks. How many weeks of school will Harold have to attend this quarter before he will have taken a total of 20 quizzes?

• 5 weeks
• 6 weeks
• 7 weeks
• 8 weeks

If the 2nd term of an AP is 13 and the 5th term is 25, the common difference is 

• 12
• 4
• 3
• 5

John has 3 dogs, each month he buys a new dog. He does this for 2 months. How many dogs will he have?

• 4

• 3

• 2

• 5

If the pattern continues, how many will be in the 22nd set?

• 2

• 43

• 75

• 2016

The attendance on the first day of Sunny Day Festival was 325 people. The attendance on the third day was 382 people. Assuming the attendance will increase linearly each day, how many people will attend the Sunny Day Festival on the seventh day?

The math department sponsors a Math Family Fun Night each year. In the first year, there were 35 participants. In the third year, there were 57 participants.

How many participants are predicted for the 5^th year?

• 79

• 31

• 2

• 3

Sam has $2.50 in his piggy bank. He will add $0.25 each day. How much money will he have in his piggy bank after 12 days?

• $2.50

• $3.00

• $5.50

• $12

A plumber charges $55 for 1 hour of work, $90 for 2 hours, and $125 for 3 hours. Which formula represents the sequence of hourly charges?

• a_n = 55 + 35n

• a_n = 55(35)^n-1

• a_n = 35 + (n-1)55

• a_n = 55 + (n-1)35

How many circles in figure 4?

• 30

• 31

• 32

• 33