If a+b+c =10 and an+bc+ca =15 find the value of (a+b)^3(b+c)^3(c+a)^3 -3(a+b)(b+c)(c+a)

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)