At the store a cell phone cost 1.1 times as much as it sells online. If it cost $888.98 online, how much more does it cost from the store.

Given:

At the store a cell phone cost 1.1 times as much as it sells online.

The cost of it is $888.98 online.

To find:

How much more does it cost from the store?

Solution:

It is given that,

Cost of a cell phone online = $888.98

At the store a cell phone cost 1.1 times as much as it sells online. So, cost of the cell phone at store is

The cost of cell phone at store is $977.878 .

The difference between the cost of cell phone at store and online is

Therefore, the cell phone cost is $88.898 much more at the store.

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.