Answer:
x=2y=6
Step-by-step explanation:
x+2y=-2y+6+2y
to estimate round the numbers to the closest values
21 can round to 20
118 can round to 120
120*20 = 2400 x 2 = 4800
Answer is A
So it is a straight line question
so we will use equation of straight line
Well what i think you're asking here...I apologie if I'm wrong but what I did was
f(-1) = 4 * 7^t = 4/7
and
f(2) = 4 * 7^t = 196.
Is this what you wanted if not I can...try another way.