Its not for a test its for algebra 1 i will give a bunch of extra points to whoever answers this
30+points

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36

Suzanne began a trip with 18 1/2 gallons of gas in the gas tank of her car if she hughes 17 3/4 gallons on the trip how many gallons does she have left once she finish the trip