If she got 5/100 wrong she got 95%
95% is the same as 0.95
x + y = 4(1 + y) + y = 4 1 + 2y = 4 1 - 1 + 2y = 4 2y = 4 y = 2
-x = -1 + y-x = -1 +2
-x = 1
.... that's as far I can go... sorry
"38 below zero" can be displayed as -38.
The negative sign implies that the number is whatever the value is less than the value of 0.
Thus, -38 + 38 = 0.
Answer:
Graph B
The graph in the attached figure
Step-by-step explanation:
we have
This is a exponential function
of the form
where
a is the initial value
b is the base
r is the rate
b=1+r
In this problem
a=2 ----> the y-intercept
b=3
so
1+r=3 -----> r=3-1=2 -----> r=200%
so
The y-intercept of the graph is equal to 2
As x increases the value of f(x) increases
therefore
Graph B
The answer to these two problems are below
19) 9
21) 107