PLEASE PLEASE HELP CAN YOU ANSWER THIS ANF SHOW WORK I NEED HELP

Phineas and Ferb build a powered skateboard. They accelerate down the street in a straight line, going from 0 m/s to 15 m/s in 2 s. Find their average acceleration.​

In factoring by grouping, what would you have for step 3 for the following? step 1: x^3 +5x^2 +4x+20 step 2: x^2 (x+5)+4(x+5) step 3: ?

The product of two negative rational numbers is always zero sometimes zero never zero

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