5. Find the value of x.

The quadratic function h(t)=-16.1t^2+150 choose the graph representation

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%

Can someone tell me if this is perpendicular? !