helperid1839321

I know CPhil got to this before me, but I want to gve this a try before I see the answer.

Is it \(30+5.5\sqrt{26}\)?

x = 16 (assuming the 2 expressions given are the length and width)

r = 6, d = 12, a = \(9\pi\)

189 (rounding down)

How much heavier is the package of biscuit mix?

Was it \(\frac{x}{4}-\frac{5y}{2} + \frac{3}{x}\), or \(\frac{x}{4}(\frac{-5y}{2})\frac{3}{x}\). In the latter case, the answer would be \(\frac{-15y}{8}\).

~1.04

Linear (Constant rate of change that is via addition)

4

25 (but line has a negative slope)

You're right CPhill! I made a dumb mistake. Thanks for checking my answer! 

I noticed a pattern a long time ago...

The direct numbers can be found by 11^r, and the sum can be found using 2^r. This means that the sum of the interior numbers on row 7 = 2⁷ - 2, or 126. As a matter of fact, the function is: \(\sum\triangle(r) = maximum([0, 2^{r}-2])\), where maximum (array) = the maximum value in the array.

Could you please give us the numbers so we can help? Thanks!