1.
Which equation represents exponential decay?
A.
y
= 1.05(0.95)
x
B.
y
= 2.62(1.22)
x
C.
y
= 0.86(1.46)
x
D.
y
= 1.7(1.06)
x
Hint
2.
Which expression describes this pattern of numbers:
4, 16, 64, 256, 1,024.
A.
4
x
B.
x
4
C.
4
x
D.
4 +
x
Hint
3.
Which situation describes the expression
2?
A.
the air temperature when a cold front moves into the area and the temperature falls 2?every half hour
B.
a coin collection where 2 coins are added each month
C.
areas of various rugs with side length
t
for the rug at stage
t
D.
the population of a city that doubles every 10 years
Hint
4.
What is the value of 5
x
when
x
= 5?
A.
10
B.
25
C.
3125
D.
5
Hint
5.
Which is the graph of
y
= 0.5
x
?
A.
B.
C.
D.
Hint