Find X: 1. 0.15x+6=51 2. −1.5x−9=0 3. 1.3x=54+x 4. −0.7x+2=65 5. (x−3)·2=30 6. 6x=−50 7. 42x=13+16x 8. 2x+9=−x 9. 5x−4y=24 Solve only the ones you know. Make sure its numbered though. I will mark brainliest!!!

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

Given a circle with measures of (c, d, and r) and a circle with measures of (c', d', and r'), what is d if c c' = 12 and d' = 0.50? a) 3 b) 6 c) 12 d) 24