Which graph shows the lowest cost per square foot for a new home?

3.4a=57.8 what is the the value of a

Y=x+2 4x+3y= -36 system of equation

Pierre wants to make tables and chairs. he has a total of 220220 wooden boards and 760760 nails. 13 t+8 c \leq 22013t+8c≤220 represents the number of tables tt and chairs cc he can make with 220220 wooden boards. 48 t+37 c \leq 76048t+37c≤760 represents the number of tables and chairs he can make with 760760 nails.