Cual es el valor del término desconocido en la división 1/4 ÷ x/3 = - 3/8 a) 2 b) 4 c) 1 d) -2

Which of the following is true for the relation f(x)=2x^2+1

Complete the steps, which describe how to find the area of the shaded portion of the circle. find the area of the sector by multiplying the area of the circle by the ratio of the to 360. subtract the area of the triangle from the area of the sector.

Can some one me with these questions