my daughter is having trouble with some homework. the question is, " how to write the number 21,054 using ONLY hundreds, tens and ones in 3 different ways. HELP!

What are the domain and range of the function? f(x) = -4 (sqrt)x

Abiologist is recording the loss of fish in a pond. he notes the number of fish, f, in the pond on june 1. on july 1 there were 63 fish in the pond, which is 52 fewer fish than were in the pond on june 1. which equation represents this situation? a. f – 52 = 63 b. f – 63 = 52 c. 63 – f = 52 d. f – 63 = –52

The pair of coordinates that do not represent the point( 5,150’) is a. (5,-210) b. (5,210) c. (-5,330) d. (-5,-30)