Discount of 5
6% tax
100-5=95
100+6=106
12*0.95*1.06=12.084
the price is $12.08
Answer:
C
Step-by-step explanation:
x+4y=-12
x+7y=-15
subtract
-3y=3
y=-1
x+4(-1)=-12
x=-12+4=-8
so point is (-8,-1)
I DON'T UNDERSTAND MATH ANYMORE!!!!!!!!
This is exponential decay which can be expressed as:
y=ab^t, y=final value, a=initial value, b=rate, t=time
In this case a=25000, r=(100-20)/100=0.8 so
y=25000(0.8^t), so in 4.5 years...
y=25000(0.8^4.5)
y≈$9158.93 (to nearest cent)
Answer:
she has 3/4 of the material left or 75%