Find the area of the shaded region
A. 100
B. 344
C. 1256
D. 314
E. 1600

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?

Solve the equation by completing the square. x^2+2x=17