Explanation:
Emily wants the result of 3x + 4 to be positive.
Let's check the options:
a) 3x + 4 > 0
3x > -4
x > -4/3
The value of 3x + 4is greater than zero
b) 3x + 4 > 4
3x > 4 - 4
x > 0
For the result of 3x + 4 to be positive, the value of x must be greater than 4
c) check if 3x + 4 will give whole numbers
if x = 1/2
3(1/2) + 4 = 1.5 + 4 = 5.5
The value of 3x + 4 may not give whole numbers
d)
