(Page 253) A zoologist observes two sloths sitting in a tree at different heights. Both sloths start climbing at the
same time. They stop after x minutes and she notes one
sloth's height in the tree is 12 (2x + 4) meters and the
other's height is x + 3 meters. How many values of x make
the equation 2 (2x + 4) = x + 3 true?

Also solve 9x - 5 = 9x -5 how many solutions does the equation have? show your work