The regular price of a smart phone is represented by x. When an upgraded phone is released, the new price is 25% more than the older model. The upgraded phone's price can be represented by which expression?

Responses
A 1.25x
B .25x.
C x + .75x
D 1.75x

The upgraded phone's price is 25% more than the older model, which means it is the older model's price plus 25% of the older model's price. This can be written as:

x + 0.25x

Simplifying this expression gives:

1.25x

Therefore, the upgraded phone's price can be represented by option A, 1.25x.