I'm confused can someone help ? Suppose we are told that the mean IQ of a population is μ = 100 and the standard deviation is σ = 10. Draw a normal distribution to represent the data percentage of data between 80 and 120.

The first and second steps to solve the equation 3x/5 + 5 = 20.are shown below 3x/5 + 5 - 5 = 20 - 5 3x/5 (5/3) = 15 (5/3)a.addition property of equality b.subtraction property of equalityc.multiplication property of equalityd.division property of equality