You can use a graphing calculator (Desmos for an example) to solve 36. And you would multiply 2x+3 • 4x+5 to find the area by the foil/distribution method (2x+3)(4x*5)
Because it made people shorter, weaker and changed nature. People stopped getting a nutritious diet because they kept eating the same food. While hunters and gatherers would have meat, fruit, vegetables and grain
Http://www.google.com/url?q=http://www.sosmath.com/algebra/inequalities/ineq01/ineq01.html&sa=U&ved=0ahUKEwjXwL6qvsnRAhUIdiYKHU8sDdkQFggPMAA&sig2=wLL4VtnQtN-9CevOb4M7Qw&usg=AFQjCNGIZD-7guk9urORDLjgMCHb1LqHJg