Angle rode is bike 21 miles in 3 hours at the unit rate how far will he ride in 4 hours

3. solve by graphing: y = 2x + 6 x + y = -3

Im gonna fail 7th grade selective breeding 1. creates offspring which are genetically identical to the parent 2. is the process of breeding only organisms with desirable traits 3. involves the removal of the nucleus of a cell 4. combines traits from organisms of different species

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /