The polynomial function C(x)=6x2+40x gives the cost, in dollars, of an aluminium square of side x feet. Find the cost of an aluminium square of side x=7 feet.

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

This is about circle theorems. someone asap : (

Francis is getting new carpet tiles in his living room and den. his living room and den are connected. he needs to figure out how much carpet he needs and the cost involved. if each tile costs $2.00 per sq ft, how much would it cost to have new tile put in the den? a) $24 b) $36 c) $48 d) $54 plz awnser soon