Luis buys skateboards for64.80. he marks up the skateboard by 45% before he sells them in the store. what is the retail price of the skateboard?

Acircle has a circumference of 2 pi cm. which statement about the circumference and area is true? a comparison of the area and circumference is not possible since the area cannot be determined. the numerical values of the circumference and area of the circle are equal. the numerical value of the circumference is greater than the numerical value of the area. the numerical value of the circumference is less than the numerical value of the area.

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?