we have
[tex]m(x)=\pi x^{2}-2\sqrt{2}x^{2}[/tex] ---------> equation 1
[tex]g(m)=1.50m[/tex] ---------> equation 2
To represent the cost of the mulch based on the radius of the circle
Substitute equation 1 in equation 2
[tex]g(x)=1.50*[\pi x^{2}-2\sqrt{2}x^{2}][/tex]
therefore
the answer is the first option
[tex]1.50*[\pi x^{2}-2\sqrt{2}x^{2}][/tex]
