What is the scale factor of dilation?

1 over 2
1 over 3
1 over 4
1 over 5

How can (square root of 25) ^2 be rewritten?

The average daily maximum temperature for laura’s hometown can be modeled by the function f(x)=4.5sin(πx/6)+11.8 , where f(x) is the temperature in °c and x is the month. x = 0 corresponds to january.what is the average daily maximum temperature in may? round to the nearest tenth of a degree if needed.use 3.14 for π .

Solve the system of equations. 2x-2y=-4 and x+y=8. show work