Hey big men i need help with this question if you get it right you get brainliest. no bots also

 " $ 1.29 per roll " .

Step-by-step explanation:

Given:  C = (1.29) r ;

We are asked to find the cost of one rol,l;

in dollars per single roll.

Since "r" refers to "number of rolls" ;

Let "r" be equal to "1" ; and solve for "C" ;

  C = (1.29) r ;

     = (1.29)*(1) ;

     = (1.29) .

The answer is:  " $ 1.29 per roll " .

Hope this is helpful!

Best wishes!

the answer is 489

step-by-step explanation:

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus