Answer:
$9.90 per hour
Step-by-step explanation:
This month:
Initial pay: $10 per hour
% raise : 10%
Dollar amount of raise = 10% x $10
= 10/100 x 10 = $1
Gina's pay after the raise = $10 + $1 = $11 per hour
Next Month:
Starting pay: $11 per hour
% decrease : 10%
Dollar amount of decrease = 10% x $11
= 10/100 x 11 = $1.10
Gina's pay after decrease = $11 - 1.10 = $9.90 per hour
Answer:
<em>24.66 mg</em><em> of medicine will be left.</em>
Step-by-step explanation:
The given exponential equation is,

Where,
A(t) = amount after time t
i = initial amount = 100 mg
r = rate of change = -14% = -0.14 (-ve is taken because the amount is decreasing)
t = time = 10 hours
Putting the values,



Answer:
see below
Step-by-step explanation:
f(x) = −16x^2 + 24x + 16
Set equal to zero to find the x intercepts
0 = −16x^2 + 24x + 16
Factor out -8
0 = -8(2x^2 -3x-2)
Factor
0 = -8(2x +1) (x-2)
Using the zero product property
2x+1 =0 x-2 =0
x = -1/2 x=2
The x intercepts are -1/2 ,2
Since the coefficient of x^2 is negative the graph will open down and the vertex will be a maximum
The x value of the maximum is 1/2 way between the zeros
(-1/2+2) /2 = 1.5/2 =.75
To find the y value substitute into the function
f(.75) = -8(2x +1) (x-2)
=-8(2*.75+1) (.75-2)
= -8(2.5)(-1.25)
=25
The vertex is at (.75, 25)
We have the zeros, and the vertex. We know the graph is symmetrical about the vertex