Which of the following is true regarding the solutions to the logarithmic equation below?
2logg(x) = 2
10g6(x? ) = 2
x2 = 36
x=6,-6
x= 6 and x=-6 are true solutions
x=6 and x=-6 are extraneous solutions
x=6 is a true solution and x=-6 is an extraneous solution
x= 6 is an extraneous solution and x=-6 is a true solution

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.

Quadrilateral efgh was dilated with the origin as the center of dilation to create quadrilateral e'f'g'h'. the quadrilateral was dilated using a scale factor of 2.5. the lengths of the sides of quadrilateral efgh are given. what is the length of side f'g'?

The diameter of the moon is about 3500 km. approximate the surface area of the moon using the formula for the surface area of a sphere, s = 4πr^2. write your answer in scientific notation.