9514 1404 393
Answer:
$121.00
Step-by-step explanation:
Together, the tax and tip were 6% and 15% of $100, or 21% of $100. That means the total cost of Marco's mean was ...
(1 +21%) × $100 = 1.21×$100 = $121.00
What is that $13,455.78? Something? I did this and got $13,122.76. Here's how I did it:
Use this formula

where A is the ending amount, P is the starting amount, n is the number of times it compounds a year, and t is the number of years. We have all we need to set it up:

First divide and add inside the parenthesis:

then multiply the exponents:

raise the value inside the parenthesis to the power of 260:

and finally multiply to get A = $13,122.76
Answer:
Solution given:
y=-1/2 x²
for
f(x)=-1/2 x².
differentiating each term with respect to x
f'(x)=-x
when
x=-4
f'(-4)=4>0 increasing
when
x=-2
f'(-2)=2 >0 increasing
when x=0
f'(0)=0 stationary point.
other points are decreasing
so
largest interval of increasing is
A.X<-2
Answer:
2y - 100
Step-by-step explanation:
Last year's income = y
2y-100