Afarmer had 1,000 horses and cows. after selling some of them, he had 550 horses and 350 cows left. how many horses and cows did he sell altogether?

Shiny white dental insurance costs $258 per year. approximately one-third of insured people need a filling, which averages $110 each. 80% of insured people get a preventive check-up each year, and the average cost of this visit is $95. if you consider shiny white’s income and expenses, what is the expected value of each insured customer?

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.