Find the 51st term of the arithmetic sequence 25, 12, -1,

Which of the following expressions is equal to 2x^2+8

What is the area of the shaded sector?

Write a ratio and a percent for the shaded area. it is 3x3 and 5x5 grid there is 6 shaded out of a. 6 over 25 , 30% b. 3 over 50 , 6% c.6 over 25 , 24% d. 3 over 10 , 30%