Normal line to the curve y=ln(2x+a) at x=1 is perpendicular to x-4y+2 = 4ln3. find the value of a.

What are the relative frequencies to the nearest hundredth of the columns of the two-way table?

Aresearch group wants to find the opinions’ of city residents on the construction of a new downtown parking garage. what is the population of the survey downtown shoppers downtown visitors downtown workers city residents

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?