Evaluate the following using the properties of addition of rational number minus 2 by 3 + 1 by 2 + minus 7 by 9 + 7 by 8

What is the average diastolic blood pressure for adults

Ys is the perpendicular bisector of xz what it is the length of xs

For each phone call robert makes,he pays $0.10 for the first minute and $0.05 for each additional minute. what is the cost for two 5 minute calls ? a $0.60b $0.30c $0.15d $0.45 show work.