Función logarítmica. Necesito saber cómo hacer su grafico , hallar monotonía y cómo pasar a función exponencial.

Sadie computes the perimeter of a rectangle by adding the length, l, and width, w, and doubling this sum. eric computes the perimeter of a rectangle by doubling the length, l, doubling the width, w, and adding the doubled amounts. write an equation for sadie’s way of calculating the

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me