Asolution has an h+ concentration of 0.000316227. what is the ph of this solution to the nearest tenth

Scott harris can invest $7,000 in a 1-year cd that earns interest at an annual rate of 4 percent compounded monthly. the amount per $1.00 is 1.040742. he can also invest $7,000 in a 1-year cd at annual rate of 4 percent compounded quarterly. the amount per $1.00 is 1.040604. what is the difference in the amount of interest earned for each investment? a) $0.96 b) $0.81 c) $0.87 d) $0.88

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Can someone me out here and the tell me the greatest common factor