Which expression is equivalent to ¼ m + ¾ m - ⅜ (m+1)? ⅝ m + ⅜
⅝ m - ⅜
⅜ m + ⅝
⅜ m - ⅝

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

Which expression gives the area of the triangle shown below

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.