An astronomer records over several nights the change in position of Venus and then calculates that Venus orbis the Sun once every 110 Earn days. This figure is considerably lower than the 225 Earth day orbit the is widely accepted for Venus. What should the astronomer do next?

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

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?

Which graph represents the equation y =4x