How do I expand the brackets for the equation 5x(6x+1)?

Rectangle leg this 11feet and perimeter of 38feet what is the width of the rectangle in feet

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm^2. what is the area of the second triangle?

Which term below correctly completes the following sentence? if a function has a vertical asymptote at a certain x value, then the function is what at that value