D = r• t
reverses the equation so that D and r are on the same side
d/r = t

Sam travels 4 hours at a rate of 50 mph
First one because when you subtract 7 u keep the var. x alone and isolate it.
Answer:
2
Step-by-step explanation:
The only common factor of the given numbers is 2.
Shaquira can make 2 packages, each containing 43 chocolate chip cookies and 21 sugar cookies.