How do you do standard form, expanded form and words with decimals 2.07?

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.

Mario is constructing a frame for 10 in. by 8 in. photo. he wants the frame to be the same with all the way around in the same area of the frame and photo to be 120 square inches what is the dimension of the frame?