Please help with #27 and please explain

(a) 3 added to twice the value of n

(b)

Step-by-step explanation:

Given

Table #27

Solving (a): First, we express as an equation

The table illustrates a linear function; so, we calculate the slope (m) first

Where:

So:

The equation is then calculated using:

In words, the equation is: 3 added to twice the value of n

Solving (b): As an equation.

This has been solved in (a) above:

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26 is 33.33% of 78

step-by-step explanation:

26 is what percent of 78?

26 is p% of 78

equation: y = p% * x

solving our equation for p

p% = y/x

p% = 26/78

p = 0.3333

convert decimal to percent:

p% = 0.3333 * 100 = 33.33%