solve 4^x+2 = 2^x-1 what are the exact and approximate solutions?

Which of the greatest common gcf of 32 and 48 a 16 b 96 c 8 d 32

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?

Yesterday, george drank 1 small bottle and 2 large bottles, for a total of 1,372 grams. the day before , he drank 1 small bottle and 1 large bottle, for the total of 858 grams. how many grams does each bottle hold?