Answer:
D) x=9
Step-by-step explanation:
x = 2y- 5
2y = x + 5
y = (x+5) / 2
4x + 7(x+5)/2 = 85
8x + 7x + 35 = 85*2
15x + 35 = 170
15x = 170 - 35 = 135
x = 135/15 = 9
All -1.8
In addition and subtraction the order of the numbers does not matter, so the result will always remain the same
For the second question the answer is $65.00
For the third question the answer is 14%
Sorry if I'm wrong
