i think the answer to this is 3.15
3/4 is greater than 2/5. 2/5 is .4 and 3/4 is .75
F(x) = (x - 4) (x^2 + 4) would be your answer.
If you would like to know what is the solution of the inequality x/3 > 1, you can calculate this using the following step:
x/3 > 1 /*3
x > 1 * 3
x > 3
The correct result would be x > 3.
X= my age
500-3x=230
500-3x-230=230-230
270-3x=0
270-3x+3x=0+3x
270=3x
270/3=3x/3
x=90
you are 90 years old
