Answer:
And then the rectangular coordinates for this case are :
Step-by-step explanation:
We have the following point given 
and we want to conver from polar to rectangular coordinates and we need to use the following formulas:
For this case we have that:
And:
Replacing we got:
And then the rectangular coordinates for this case are :
The decrease is 25% so this means that 22 is 75% of the original number (100% - 25% = 75%)
Divide 22 by 75%:
22/ 0.75 = 29.3
The answer is 29.3
Whenever u multiply or divide an inequality by a negative number u must flip the inequality sign <span />
Answer:
a.
Step-by-step explanation:
this is a line going from -infinity to +infinity in x and in y direction.
for b or c to be right the function would have to be a single point, as nothing else is valid as value.
Population are always modeled by exponential growth equation given by:
f(x)=a(1+b)^t
where:
a=original number
b=rate of growth
t=time
thus
f(x)=412(1.05)^t
the population after 9 months will be:
f(9)=412(1.05)^9=639.15=639
