Work out the value of 4(2x+3y) when x=8 and y=-3

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

What’s the answer ? use the picture to see the problem

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2