3) A tour trolley covers a distance of 8.5 miles in of an hour. a) How many miles per hour does the trolley go? Show all work.
b) How far can the trolley travel in 5.5 hours? Show all work.

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

Negative 5 1/12 + negative 4 1/4 + 6 3/4