1.	Estimate the area of the triangular piece of land using Heron's formula.
		A.	9 square miles	B.	10 square miles
		C.	12 square miles	D.	11 square miles
		Hint
	2.	The distance you can see to the horizon can be estimated by using the formula . In the formula, d represents the distance you can see in miles, and h represents the height your eyes are from the ground in feet. Suppose when you are standing on the ground your eyes are about 4.1 feet above ground level. About how far can you see to the horizon?
		A.	2.47 miles	B.	1.22 miles
		C.	9.76 miles	D.	4.88 miles
		Hint
	3.	Suppose you are in a building and your eyes are 1,000 feet above the ground. The distance you can see to the horizon is where h represents the height your eyes are from the ground in feet and d is the distance in miles. About how far can you see to the horizon if you estimate to the nearest whole number?
		A.	about 38 miles	B.	about 39 miles
		C.	about 37 miles	D.	about 36 miles
		Hint
	4.	The formula gives the minimum speed s of a car in miles per hour, where d is the distance in feet the car skidded after its brakes were applied and f is a drag factor that depends on the road surface. A car left skid marks for 80 feet on a dry, concrete road surface with a drag factor of 0.82. Find the minimum speed to the nearest mile per hour.
		A.	42 miles per hour	B.	44 miles per hour
		C.	48 miles per hour	D.	46 miles per hour
		Hint
	5.	Estimate the solution of to the nearest whole number.
		A.	10	B.	12
		C.	11	D.	9
		Hint