Can someone help me for one of these questions it would mean a lot pls

0.66y = 0.9x + 0.48 if y has a value of 108.45 what is the value of x?

Complete the following reactions using word and balanced equations including states. dilute phosphoric acid is added with a calcium hydroxide solution.

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space