Answer:
9.9% to a decimal is 0.099
The population is increasing at the rate of 220
Explanation:
Given that the population of Hannah's town is increased from 1500 to 2600 in five years.
This can be written in expression as
and

We need to determine the rate of change of population.
The rate of change can be determined using the formula,

where
and 
Substituting the values in the formula, we have,

Simplifying, we have,

Dividing, we get,
220
Thus, the population is increasing at the rate of 220
Answer: 20 parks
Step-by-step explanation:
Let the total number of parks be y.
Then 75% of y = 15 , that is
x y = 15
75y = 15 x 100
75y = 1500
divide through by 75
y = 1500/15
y = 20
Therefore Springfield have 20 parks altogether
<span>For the answer to this question,
Let x = depth of the gutter
then
18 - 2x = width of the gutter
Cross section area
A = depth x width
</span><span> = x(18 - 2x)
A = 18x - 2x^2
:
Axis of symmetry will give x value for max area:
x = -b/(2a)
x = -18/(2x(-2))
x = 4.5 inches is the depth for max area
</span><span>Max area: 4.5 * 9 = 40.5 sq/in
I hope my answer helped you.</span>
This is a linear function. They vary directly with each other.
x increasing by 1 each time.
y increases by 4 each time.
I hope this helps!
~kaikers