Sarah bought a mango tree that grows 4 cm each day. It was 10 cm tall when she bought it and now it is 82 cm. Write an equation to express the growth of this tree. Let "x" represent the number of days Sarah has owned the tree.
4x+10=82 The 4 is how much it grows each day and the x is the number of days she had it. and the 10 is how tall it was when she got the tree. the 82 is how high it is now.