60 POINTS If each square of the grid below is 0.5 cm by 0.5 cm, how many centimeters (cm) are in the perimeter of the blue figure?

Reflect the point (7,0) across the y-axis

What is the expression in factored form? -20x^2 - 12x a. 4x(5x+3) b. -4x(5x-3) c. -4(5x+3) d. -4x(5x+3)

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?