Armando and drew do volunteer work at an animal shelter. Drew worked 3 more hours than armando, and together they worked more than 27 hours. What is the least number of hours each worked?:confused: :confused: :eek:

my son had a warm up problem that I think he got wrong. It was 5x-2y=8 I think you set x at 0 and then you find y. I say 5(0)-2y=8 y=-4 when x is 0. Is this correct?

2zx^y=18 where x=1, z=y

D plus 8 over 3 equals -14 I completely forgot how to do this Will someone help me??

Can anyone help me with these. I don't get it.:confused: Aluminum bromide + chlorine yield aluminum chloride +bromine Potassium chlorate when heated yields potassium chloride + oxygen gas Hydrogen +nitrogen monoxide yield water + nitrogen