When played, the middle C key on a piano has a frequency of 262 cycles per second. What sine function represents this note when it is graphed with an amplitude of 0.5 unit?
Let x represent the number of seconds.

When y’all answer can y’all explain too !

The description below represents function a and the table represents function b: function a the function is 5 more than 3 times x. function b x y −1 2 0 5 1 8 which statement is correct about the slope and y-intercept of the two functions? (1 point) their slopes are equal but y-intercepts are not equal. their slopes are not equal but y-intercepts are equal. both slopes and y intercepts are equal. neither slopes nor y-intercepts are equal.

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25