The price of a cup of coffee was $2.40 yesterday. Today, the price rose to $2.55. Find the percentage increase.

Shania's test scores in 8 subjects were 88, 91, 85, 74, 69, 72, 80, and 87. shania found the middle number of her scores. which type of measure did she find?

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.