The function f is defined by f(x)=2x^2-4.
find f(-x)

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

Aboat has a speed of 9 mph in calm water. it takes the boat 4 hours to travel upstream but only 2 hours to travel the same distance downstream. which equation can be used to find c, the speed of the current? 2(9 – c) = 4(9 + c) 9 + c = 4(9 – c) 9 – c = 2(9 + c) 4(9 – c) = 2(9 + c)