Ineed with question 3. part a and b

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

In exponential growth functions, the base of the exponent must be greater than 1,how would the function change if the base of the exponent were 1? how would the fiction change if the base of the exponent were between 0and 1

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?