Astudy was designed to investigate the effects of two variables long dash (1) a student's level of mathematical anxiety and (2) teaching method long dash on a student's achievement in a mathematics course. students who had a low level of mathematical anxiety were taught using the traditional expository method. these students obtained a mean score of 250 with a standard deviation of 40 on a standardized test. assuming a mound-shaped and symmetric distribution, in what range would approximately 99.7% of the students score?

The number of members f(x) in a local swimming club increased by 30% every year over a period of x years. the function below shows the relationship between f(x) and x: f(x) = 10(1.3)xwhich of the following graphs best represents the function? graph of f of x equals 1.3 multiplied by 10 to the power of x graph of exponential function going up from left to right in quadrant 1 through the point 0, 0 and continuing towards infinity graph of f of x equals 10 multiplied by 1.3 to the power of x graph of f of x equals 1.3 to the power of x