576 is 450% of what number ?

225/100 of last years cost. write each fraction as a decimal and as a percent

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

What expression is equivalent to 42x-56y