7. At an online retailer, the price of the camera is discounted 15% to $212.50. What was the price of the camera before the discount?

$250

Step-by-step explanation:

discounting 15 percent is the same as marking something for 85 percent. This is the same as multiplying by .85

set up equation and solve

.85x=212.50

x=250

1,800 ft

Step-by-step explanation:

Rebecca will walk in the pattern of a regular polygon with 'n' sides and internal angles of 160 degrees (180 at a straight line - 20 degrees from each turn).

The equation that describes the internal angle of a regular polygon is:

For A = 160 degrees:

If each side is 100 ft long, the total distance that Rebecca has walked is:

She walked 1,800 ft.