Answer:
y = -6x + 30
Step-by-step explanation:
The inicial value you have is $30, so this will be the value of y after 0 weeks, that is, x = 0
After one week, you spend $6, so you will have y = 30 - 6 = 24 when x = 1.
With these pair of values, we can find the linear equation:
y = ax + b
for x = 0, y = 30:
30 = a*0 + b
b = 30
for x = 1, y = 24:
24 = a*1 + 30
a = 24 - 30 = -6
So, our equation is:
y = -6x + 30
Answer:
14π
Step-by-step explanation:
The equation for circumference is
C = π* diameter
AB is the diameter, so the circumference is 14π
Answer:
Markup amount = sellingprice - costprice
=12.50 - 5 = 7.5 is markup
Answer:
Step-by-step explanation:
1) -28r +14=-12r-2
-16r=-16
r=1
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2) -35x+5=6x-36
-41x=-41
x=1
