Dox needs to solve the system of equations below. 4x + 5y = 7
-2x - 3y = 9
Dox needs to solve the system of equations below: 4x+5y=7 2x-3y=9 He decides to use the elimination method to cancel out the x terms in order to first solve for y. Dox uses the following steps:
Step 1: 4x + 5y = 7
-2(2x) - 3y = 9
Step 2: 4x + 5y = 7
- 4x - 3y = 9
Step 3: 2y = 16
Step 4: y = 8
Did Dox use the correct steps to solve for y? A. Yes, Dox correctly solved for y. B. No, Dox should have multiplied 2x by 2 instead of by -2. C. No, Dox should have multiplied the entire second equation by -2. D. No, Dox should have multiplied the entire second equation by -4.