What is the closed linear form for this sequence given a1 = 13 and an + 1 = an + 4?

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

Determine the domain and range of the given function. the domain is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}. the range is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}.

I’m not good at math can i have ? ?