The table below represents the amounts Erica ran in the first four days after she started increasing her distance by the formula, y = 3(1.1)x, rounded to the nearest hundredth mile. Which of the values is incorrect

Question

anonymous · Answer

attachment

anonymous · Answer

@Michele_Laino

michele_laino · Answer

we have these subsequent values:
$$x = 1 \to y = 3 \times {1.1^1} = 3 \times 1.1 = 3.3$$

michele_laino · Answer

$$x = 2 \to y = 3 \times {1.1^2} = 3 \times 1.21 = 3.63$$

michele_laino · Answer

$$x = 3 \to y = 3 \times {1.1^3} = 3 \times 1.331 = 3.993$$

michele_laino · Answer

finally:
$$x = 4 \to y = 3 \times {1.1^4} = 3 \times 1.4641 = 4.3923$$

anonymous · Answer

ok so what makes one of them incorrect

michele_laino · Answer

from your table, I see that when x=2, then y= 3.5, whereas from our computation we see that when x02 then y= 3.63, so what can you conclude?

michele_laino · Answer

oops..when x=2 then y= 3.63...

michele_laino · Answer

I think that y=3.5 is incorrect, since when x=2 we have y=3.63
am I right?