Evaluate... Substitute... Plug in

What is the value of x^2 + 8x + 12 when
X= -1?

Simplify 4 square root of 2 end root plus 7 square root of 2 end root minus 3 square root of 2 . (1 point) 2 square root of 8 8 square root of 2 8 square root of 6 6 square root of 8

Answer this question only if you know the answer! 30 points and

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.