The curve of best fit is given as y = 5 - 2x + 4x2. Find the value of y when x = 2

y = 17

Step-by-step explanation:

This is very simple let me show you!

All you have to do is plug in the variable. It asks us to find y when x = 2. Therefore we plug it in!

So 2x would be 2(2) and 4x2 would be 4(2)2

Therefore we get y = 5 - 2 * 2 + 4(2) * 2

Multiply -2 by 2

y = 5 - 4 + 4(2) * 2

Then 4 by 2

y = 5 - 4 + 8 * 2

Then 8 by 2

y = 5 - 4 + 16

Then we subtract 5 from 4

y = 1 + 16

Therefore y = 17.

5

step-by-step explanation:

b. 6

step-by-step explanation:

we are given the table representing an exponential function.

we can see from the table that, as x is increasing, the value of y is increasing in the power of 6.

i.e. the following relation is obtained,

x = 1, y = 6

x = 2, y = 36 =

x = 3, y = 216 =

x = 4, y = 1296 =

x = 5, y = 7776 =

so, the geometric series obtained is .

thus, the common ratio is given by = = 6.

hence, the common ratio is 6.