You plug in x = 1 and y = -4 into the system of equations and see if they fit:-
y = -4x
- 4 = -4 * 1 = -4 This fits
y = 2x - 2
-4 = 2*1 - 2 = 0 Does NOT fit.
So (1, -4) is not a solution.
Cross multiplying making x subject of the equation or multiplying 42 from both sides
B. 33.5 is your answer
First you want to add 12+4 because it is in parentheses
8.5+16x2-7
Then you multiply 16 by 2
8.5+32-7
Then you add 8.5 to 32
40.5-7
Then you subtract 7 from 40.5 giving you your answer
33.5
Answer:
one dollar and 20 cents
Step-by-step explanation:
I divided 4.80 by four
