What is the equation of the line that passes through the point (8,4) and has a slope of 3/2

Evaluate the expression for the given value of the variable 7a - 4a for a =8

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Why is x= 4 a solution to the proportion 14/x 56/1 6