7.20

The graph of an arithmetic sequence is shown. What is the value of the fourth term?

5.5

The function f(x) varies directly with x and f(x)=160 when x = 40.What is f(x) when x = 8?

32

The function f(x) varies inversely with x and f(x)=2 when x = 16.What is f(x) when x = 4?

8

The pressure of a gas p(v) varies inversely with the volume of the gas v. The pressure of a gas measures 8 kg/cm2 when its volume is 40 cm3 .Which equation can be used to find the pressure of the gas when the volume is changed?

p(v)=320/v

What is the common difference in the sequence 50, 40, 30, 20, 10,... ?

-10

What is the value of the element at h32 ? H=⎡⎣⎢615−152923−4752⎤⎦⎥

23

The growth of a bug population shows a geometric sequence as shown in the table.This pattern continues indefinitely. What will the population be on Week 22?

about 527,110

Is this sequence arithmetic, geometric, or neither? 3, 6, 9, 12, 15,...

arithmetic,