That is 1.48 boy(s) to 1 girl. Lol....
The formula for exponential growth is y = amount(1+r)^x
Where amount would be the starting value, r would be the percentage and x would be the length of time.
The listed formula that meets that is D. y = 35(1.35)^x
<span>D. y = 20(0.75)^x,
for function to be decreasing value under exponent should be less than 1,
y(int) can be found when x=0
</span>y = 20(0.75)^0=20*1=20
Answer:
$163.85
Step-by-step explanation:
Since the cost of the couch is $113.00 then this is the original 100% price. To find a 45% mark up then find 145%. Remember 100+45 = 145. To find the price set up a proportion with these values:

Solve for the price by cross multiplying numerator with denominator.
x(100) = 113(145)
100x = 16385
x= 163.85