How to find if a function is positive or negative?

There are 130 people in a sport centre. 73 people use the gym. 62 people use the swimming pool. 58 people use the track. 22 people use the gym and the pool. 29 people use the pool and the track. 25 people use the gym and the track.

You are downloading a song. The percent y (in decimal form) of megabytes remaining to download after x seconds is y = - 0.1x + 1. a) Graph the equation b) Interpret the x and y intercepts c) After how many seconds is the download 50% complete!

How do I alive this equation x-2/5==8/5

Polynomials?! What is the product of - 2x^3+x-5 and x^3-3x-4 ... Is the product of - 2x^3+x-5 and x^3-3x-4 equal to the product of x^3-3x-4 and - 2x^3+x-5

How many solutions can be found for the equation 4x=4x

Alice, ben and carol shared a sum of monet they received, how much money did ben receive

What is thirty-four and twelve hundredths as a decimal number?

How many times smaller is 6 is than 60

Sarah is making strings of beads in the first string she uses 3 beads and she triples the number of beads in each of the next strings identify the number of beads she uses in 5 string

If yuri has 20 books in each shelve and there are 6 bookshelves how many book are in the bookcase