Ms. keller is grading semester projects. in the past two hours, she has graded five projects. at this rate, she will grade __ projects in seven hours at a rate of __ projects per hour. fill in the blanks will mark the brainliest!

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

40% off the regular price is the correct answer.

step-by-step explanation: