Which best explains or justifies Step 1?
The first step for deriving the quadratic formula from the
quadratic equation, 0 = ax? + bx + c, is shown.
Step 1 -c = ax? + bx
subtraction property of equality
completing the square
factoring out the constant
zero property of multiplication

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.

The students in a class were asked how many siblings they have. the data obtained is represented in the dot plot. the number of students who have no siblings is . the number of students who have three or more siblings is .

Of jk j(–25, 10) k(5, –20). is y- of l, jk a 7: 3 ? –16 –11 –4 –1