I will mark brainliest! Please help I’m giving extra points !!!

2 questions ( look at the photo below and answer that one as well)

1) the weight of an object of the earth varies directly as the same object on the moon . An 400 pound object will weigh 60 pounds on the moon . How much would an 80 pound object weigh on the moon?

1) 20

2)8

3)14

4) 12

Landon is entering the science fair. he has a budget of $115. he has spent 20 percent of the money on new materials. how much does landon have left to spend?

The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).

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