What do the double brackets with an x in the middle mean?

Brenda is finding the product of - 3r and - 2r^2+3r Is she correct? If not, what changes should be made? - 3r (-2r^2+3r)

Joshua has 112 rocks. Jose has 98 rocks. Albert has 107 rocks. What is the correct order of the boys from the least to the greatest number of rocks owned?

For which equation does it make the most sense to solve by completing the square? x2-8=1 3x2-x+17=0 5x² + 3x = 9 x² + 20x = 52

Is 121 a prime or composite number

Mrs. Dice needs to build a pen for her new puppy, Maggie. Calculate the area of a rectangular pen with dimensions of 10 ft by 11 ft

Solving - 4 (x+1) - 3=-3 (x-4) A-19 B19 C2 D0

Choose the expression that represents the indicated composition. f (x) = 10x g (x) = x - 3 (f º g) (x) = ? 10x - 30 10x - 3 10x2 - 30 10x2 - 30x

How many solutions are there to this equation in 5 (x+10) - 25=5x+25?

How do you find the two numbers Factor equation is between 10 and the quotient of 787 divided by 2

A stock investment went up $25/%$ in 2006. Starting at this increased value, what percent would it have to go down in 2007 to be back to its original price at the beginning of 2006?