Question

assessment practice

1. for every ten sheets of stickers you buy at a craft store, the total cost increases $20.50.

an equation that relates the number of sheets purchased, x, and the total cost, y, of the stickers is y = \boxed{} x.
use the equation you wrote to complete the table.
cost of stickers

number of sheets (x)	3			19
total cost (y)		$10.25	$26.65

Explanation:

Step1: Find unit cost

Unit cost = $\frac{20.50}{10} = 2.05$ per sheet. Equation: $y = 2.05x$.

Step2: Calculate cost for 3 sheets

$y = 2.05 \times 3 = 6.15$

Step3: Find sheets for $10.25

$x = \frac{10.25}{2.05} = 5$

Step4: Find sheets for $26.65

$x = \frac{26.65}{2.05} = 13$

Step5: Calculate cost for 19 sheets

$y = 2.05 \times 19 = 38.95$

Answer:

Equation: $y = 2.05x$
Table values (from left to right, top to bottom missing cells): 5, 13, 6.15, 38.95

Completed table:

Number of Sheets (x)	3	5	13	19