If DM = 45, what is the value of r?
r +3
4r - 28

A 12
B 13
C. 14
D. 15

-7 i hope this right

Step-by-step explanation:

Find the Greatest Common Factor (GCF).

GCF = 44

2 Factor out the GCF. (Write the GCF first. Then, in parentheses, divide each term by the GCF.)

4(\frac{4r}{4}-\frac{28}{4})4(

4

4r

−

4

28

)

3 Simplify each term in parentheses.

4(r-7)4(r−7)

14

Step-by-step explanation:

Got it right in a test ‍