The following problem has been solved correctly. For each step, describe what was done. 4(2x + 5) + 3x = 5(2x + 6)
8x + 20 + 3x = 10x + 30
11x + 20 = 10x + 30
x + 20 = 30
x= 10

Find the cosine function that is represented in the graph.

What is the ratio of the length of an object in yards to the length of the same object in miles?

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%