HELP ASAP PLEASE ANSWER ALL

Find an equation (in term of x) of line through the points (-1,3) and (1,4)

Acircle has the equation (x-2)^2 +y^2 =5. what are the coordinates of the circle's center?

Prove the divisibility of the following numbers: 25^9 + 5^7 is divisible by 30.also, read as (25 to the power of 9) + (5 to the power of 7) is divisible by 30. blank x 30what is the blank? ( it should be expressed in exponent form)