Question

a customer would like the company to build him a name plate that is 22 inches long. what is the best estimate of the number of letters the company can have on the name plate?
○ 9
○ 10
○ 12
○ 39
(chart: a scatter plot with a line of best fit ( y = 1.75x + 0.5 ), where x - axis is letters and y - axis is length (in))

Explanation:

Step1: Substitute y=22 into equation

$22 = 1.75x + 0.5$

Step2: Isolate the term with x

$1.75x = 22 - 0.5$
$1.75x = 21.5$

Step3: Solve for x

$x = \frac{21.5}{1.75} \approx 12.29$

Answer:

12