Help on this graph I need the slope and equation

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

What are the measures of angles a, b, and c? show your work and explain your answers. 25 points