Solve the problem.The circumference of a circle of radius r is given by the polynomial 2?r, where ? is an irrational number. Use 3.14 as an approximation of ?, and find the circumference of a circle with radius 
A. 25.12 in.
B. 24 in.
C. 12.56 in.
D. 50.24 in.
Answer: A
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Use a proportion to solve the problem.Martin can paint 1840 ft2 with 4 gal of paint. How many 1-gal cans does he need in order to paint a 
wall?
A. 39 cans B. 37 cans C. 10 cans D. 148 cans
Classify the triangle as equilateral, isosceles, or scalene. Then classify it as right, obtuse, or acute.
A. Scalene; acute B. Isosceles; obtuse C. Equilateral; acute D. Equilateral; obtuse
Graph the system of inequalities.x + y ? 9x + y ? 1y ? 0x ? 0
A. 
B. 
C. 
D. 
Two sides and an angle are given. Determine whether the given information results in one triangle, two triangles, or no triangle at all. Solve any triangle(s) that results.B = 11°, b = 17.7, a = 30.92
A. one triangle A = 19°, C = 150°, c = 46.4 B. two triangles A1 = 19°, C1 = 150°, c1 = 46.4; A2 = 161°, C2 = 8°, c2 = 12.9 C. one triangle A = 161°, C = 8°, c = 12.9 D. no triangle