Answer:

Step-by-step explanation:
Let
x ----> the length of Zach's car
y ----> the length of Ginny's car
we know that
The sum of the lengths of both cars is 30 inches
so
----> equation A
Ginny's car is 2 more than 3 times the length of Zach's car
so
----> equation B
substitute equation B in equation A

The answer is the positive square root of 36
The slope of the line is -4
Answer:
(X+5)(x^2-5x+25)
Step-by-step explanation: