Question

A block of ice weighing

kilograms begins to melt. Each hour the block of ice loses

of its weight. Let

be the weight, in kilograms, of the block of ice after melting for

hours. Which of the following best explains the relationship between

and

?
Choose 1 answer:
Choose 1 answer:
(Choice A) The relationship is exponential because

is multiplied by a factor of

each time

increases by

.
A
The relationship is exponential because

is multiplied by a factor of

each time

increases by

.
(Choice B) The relationship is linear because

is multiplied by a factor of

each time

increases by

.
B
The relationship is linear because

is multiplied by a factor of

each time

increases by

.
(Choice C) The relationship is linear because

decreases by

as

increases from

to

.
C
The relationship is linear because

decreases by

as

increases from

to

.
(Choice D) The relationship is exponential because

decreases by

as

increases from

to

.
D
The relationship is exponential because

decreases by

as

increases from

to

.

Answer 1

(Choice A) The relationship is exponential because the weight of the block of ice is multiplied by a factor of 0.75 each time the number of hours increases by 1.