Question

Question 11
Step 1: Determine 45% of $399.00.
$
Step 2. Determine the sale price of the television.
$
A)
REVIEW: A television normally sells for $399.00. This week, it is on sale for 45% off the normal price. Complete the steps
below to determine the sale price.
(2 points)

Question 12

$ per hour
A)
REVIEW: What is the constant of proportionality that relates Matthew's earnings, y, to the number of hours he worked, x?
Remember, the constant of proportionality is and can be found using any point on the line.
(1 point)
k =
y
x

Answer 1

Question 11
Step 1: 45% of $399.00 = 0.45 × 399 = $179.55.
Step 2: Sale price = original − discount = 399.00 − 179.55 = $219.45.

Question 12
The constant of proportionality k is the hourly rate k = y/x (units: $ per hour). I need a point (x,y) from the line (or the graph/table) to compute a numeric value. If you give one example point (hours worked, earnings), I'll compute k.