Answer:
$41000
Step-by-step explanation:
If her salary was $1,000 more than the previous year and she save $4,200, $4,200 was 10% of her salary. So we should create an equation. (x being her salary from the previous year)
0.1(x+1000)=4200 (divide 4200 by .01)
x+100=42000
42000-1000= 41000
Answer:
0.33
Step-by-step explanation:
To solve this example we use this rule :
Δx/Δy
x is amount that changed. so Δx=0,99.
How we get 0.99.
Our storm is to 3 to 6 so we find difference for x : for 3rd and 6th member of table... 3.88-2.89=0.99
Now we have :
0.99/Δy
Because we need to find from 3 to 6 , Δy=3 ,
When we find both, we can find rate of change with :
0.99/3=0.33
the inequality goes from -30 and all number up but not including -30 because it has open circle. so mark all number greater than -30
Answer:
y = - 4(x + 3)² + 7
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
From the graph (h, k ) = (- 3, 7 ), thus
y = a(x + 3)² + 7
To find a we require a point on the graph other than the vertex
Using (- 2, 3) , substitute into the equation
3 = a(- 2 + 3)² + 7
3 = a + 7 ( subtract 7 from both sides )
a = - 4
Thus
y = - 4(x + 3)² + 7 ← in vertex form
Answer is 29 volume I Hope i am right
