If 3220 = 80+7, what is the value of c?

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Abakery recorded the number of muffins and bagels it sold for a seven day period. for the data presented, what does the value of 51 summarize? a) mean of bagels b) mean of muffins c) range of bagels d) range of muffins sample # 1 2 3 4 5 6 7 muffins 61 20 32 58 62 61 56 bagels 34 45 43 42 46 72 75

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.