(9-2^3)x5 please solve this

Which of the following is the equation that says that the product of a number and ten is equal to 20 percent of that number ? a) 10n= 2.0n b) 10+n=.20n c) n+ .20n=10 d) 10n=0.20n

There are 180 white lockers in a school. there are 3 white lockers for every 5 blue lockers blue. how many lovkers sre there im tje school

X=-3y-5 3x+9y=7 how can u solve this?