X(x+1) = 306
Distribute the x
x² + x = 306
move all terms to the left and set the equal to zero (be sure to change the sign for all terms moved)
x² + x - 306 = 0
x -17
x 18
(x - 17)(x + 18)
x = -18, 17
pg. 17 & 18 is visible
hope this helps
The common denominators are 5
Keywords
system of equations, linear equation, elimination method
we have
Multiply by 
both sides
-----> <u>linear equation</u> A
-----> <u>linear equation</u> B
Applying the <u>elimination method</u> for solve the <u>system of equations</u>
Adds equation A and equation B
Find the value of y
therefore
the answer is the option D
<span>Car 1 traveled 3.5 x 42 mph= 147
Car 2 traveled 3 x 50 mph= 150
The distance between them would be </span>√147^2 +150^2
