A student solved 3x−4=x7 in six steps, as shown.

Step 1: 3=x(x−4)7

Step 2: 21=x(x−4)

Step 3: 21=x2−4x

Step 4: 0=x2−4x−21

Step 5: 0=(x−7)(x+3)

Step 6: x=−3, x=7

Which statement is an accurate interpretation of the student's work?

A The student solved the equation correctly.

B The student made an error in step 2.

C The student made an error in step 5.

D Only x=7 is a solution to the original equation.

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2

Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?