Find the circumference of the circle. Use 3.14 for pi

Which expression is equivalent to −16y+13 ? −16(−y+13) 16(−y+2) −16(y+2) 16(−y+13)

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b