Answer:
2x+9 when x equals 3 is 2*3+9
=15
Explanation:
[tex]2\cdot \:3+9\\Follow\:the\:PEMDAS\:order\:of\:operations\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:2\cdot \:3\::\quad 6\\2\cdot \:3\\2\cdot \:3=6\\=6+9\\\mathrm{Add\:and\:subtract\:\left(left\:to\:right\right)}\:6+9\::\quad 15\\6+9\\6+9=15\\=15[/tex]
