Answer: none of the above
Explanation: it’s d.
A1=12, a2=27, a3=42, etc. The pattern is that you’re always adding 15 after starting with 12. So the general rule is...
an=12+15(n-1)
So then...
a18=12+15(18-1)
a18=12+15(17)
a18=267
Answer:
-1
Step-by-step explanation:
f(4) = 2.5(4) -11
f(4) = 10 -11
f(4) = -1
Answer:
y= -10x+200, x is equal to a week
Step-by-step explanation:
formula y=mx+b
we lose 10$ a week so the slope is -10 and we start with a base amount of 200
so plug those numbers in and you have y= -10x+200
25 = 1/5 of 125. So that's 20%.