Simply multiply the proportion (all of its parts) with 31, 31(4+4+2)
= 31x10
= 310 in total
<span>644.240741
:).,.....................</span>
Well let's break this down:
<span>2 less than the product of 3 and x is squared means:
</span>
<span>the product of 3 and x is squared-2
the product of 3 and x is squared means
(3x) squared
or
(3x)^2
Now combine that with your first deduction to get </span>
<span>(3x)^2-2 or D</span>