I am having a really hard time with this worksheet. Precalculus Solving for logarithmic equations, Part 1

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%

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?

Write the factored form of this trinomial 9x^2+18x-7