Answer:
28% increase
Step-by-step explanation:
8 - 6.25 = 1.75
1.75/6.25
0.28
28%
The answer is A 7 hope it helps <3
Answer:
Q1) D
Q2) C
Step-by-step explanation:
Q1)
y ∝ x
y = kx
Let x=-1,y=2
2 = k(-1)
k = -2
Q2)
directly (y=kx)
Let x=2,y=4
4 = k(2)
k = 2
y = 2x
inverse (y = k/x)
Let x=2,y = 4
4 = k/2
k = 8
xy = 8
The first one is 810
The second is -120
-2x-2y=-12
4x-7y=-15
Solve for x in the first equation
-2x=-12+2y
2x=12-2y
x=6-y
Plug x into the second equation
4(6-y)-7y=-15
24-4y-7y=-15
24-11y=-15
11y=39
y=3.54
Plug that into the eqaution for x
x=6-3.54
x=2.46