How do you write an algebraic expression for 42 decreased by twice some number

The resulting figure after undergoing a transformation

How to simplify 6 (1-7x) + 9 (x-2)

4 is greater than w, and w is greater than or equal to - 4

Which is greater? 640 feet or 0.5 miles?

A fixed supply results in a supply line that A. is vertical B. is horizontal C. shifts to the left D. shifts to the right

A 180 ft long board is cut into 3 pieces. The second piece of board is twice as long as the first. The third piece of board is six times as long as the first. What is the length of the first piece of the board?

If f (x) = 3x and g (x) = 5x-3 find gf (x)

What is the approximate area of a 120° sector of a circle whose radius is 6 ft? Use 3.14 for π. 37.68 ft2 6.28 ft2 20 ft2 33.6 ft2

If 3x+9 = (10+x) then what does x equal?

Find the prime factorization of the number 220