writing a prime number factorization of a number using exponents. does that mean

15= 5 x 3
60= 6 x 10
28= 4 x 7
49= 7 x 7
Yes,No or What?

No.

60=6x10=2x3*5*2= 2^2 * 3 * 5

49=7^2

15 = 3 x 5

60 = 2 x 2 x 3 x 5
= 2^2 x 3 x 5

28 = 2 x 2 x 7
= 2^2 x 7

49 = 7 x 7
= 7^2