Will give brainliest to whoever does this correctly and a five star rating factor 7x^2+16x+4 show work

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

Given: klmn is a parallelogram m? n=3m? k, lf ? kn , ld ? nm kf=2 cm, fn=4 cm find: lf, ld

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.