Question 1(Multiple Choice Worth 5 points)
(08.05 LC)
A system of equations is shown below:
Equation A: 30 = d - 8
Equation B: c = 40 + 8
Which of the following steps should be performed to eliminate variable d first?
Multiply equation A by -4.
Multiply equation B by 3.

Which statement accurately explains whether a reflection over the y-axis and a 270° counterclockwise rotation would map figure acb onto itself? a coordinate plane with figure acb with point a at 1, 1, c at 3, 4 and b at 5, 1 yes, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) yes, a″c″b′ is located at a″(1, 1), c″(3, 4), and b″(5, 1) no, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) no, a″c″b″ is located at a″(1, 1), c″(3, 4), and b″(5, 1)

Can someone me i’m confused. will give brainliest and a whole bunch of points

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia