The bottom of a boat lles 7 feet below the surface of the water the boat stands 18 feet above the surface of the water. Which expression can be used to find the difference between the two values?
07-18
18-(-7)
18 - 7
07+ (-18)

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

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%