if 4x = 1/16
then x = (1/16)/4
so x = 1/64
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y = 100 - 4x ( a ) Find the value of y when x = 20.
Solve for Y algebraically. 4X + 8Y = 16 8Y = - 4X + 16 Y = - 1/2X + 2 graph and see that the Y intercept = 2
4x+9=25 4x+9=25-9 4x/4=1 16/4=4 4x+9=26 4(4)+9=25 16+9=25 The answer is 4
4 * x = 16 gives x = 4 (all in base 10)
4x24=96 20 x 4 = 80 4 x 4 = 16 80 + 16 = 96