PLEASE HELP ME SOLVE THIS

Elm street is straight. willard's house is at point h between the school at point s and the mall at point m. if sh = 3 miles and hm = 4.5 miles, what is the value of sm in miles?

How does percent markup and percent discount relate to percent of change?

0. a square do not enter sign has a height and width of feet. will the area of the sign be greater than or less than 2 1/2 square feet? explain how you know and then find the actual area.