A space exploration was a point of interest for people in the 1950’s and 1960’s.
b
buildings were more difficult to construct in the 1950s and 1960s than today
c
this space-age architectural style is soon to make a comeback
d
people like visiting buildings that were constructed long ago

I would assume the answer is a.) without knowing the question, if you respond with what question is being asked I can respond more confidently.

Explanation:

x=4, y=4

step-by-step explanation:

y=2x-4;

x+2y=12

we can use substitution since the first equation is solved for y

where ever you see y in the second equation, replace it with 2x-4

x + 2(2x-4) = 12

distribute the 2

x+4x-8 = 12

combine like terms

5x-8=12

add 8 to each side

5x-8+8=12+8

5x=20

divide by 5

5x/5 = 20/5

x =4

we still need to solve for y

y = 2x-4

we know x =4

y = 2(4) -4

y = 8-4

y=4

i don't know sorry i cannot read a novel in 30 min.

explanation:

but just in case i think the answer is b.