HELP ME HELP HELP HELP ME

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

Which table shows a proportional relationship between miles traveled and gas used?