Solve the equation.Solve cos2? - 0.21 = 0.53 for ?, where ? is an acute angle. Approximate ? to the nearest tenth of a degree.
A. 20.3°
B. 42.3°
C. 30.7°
D. 55.6°
Answer: C
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Solve the problem.Find the area bounded by the x-axis, the curve 
and 
.
A. 
ln 
B. 2 ln 7
C. ln 
D. ln 7
Perform the indicated operation and express the answer in decimal notation.(4 × 108)(5 × 10-6)
A. 0.2 B. 2000 C. 20,000,000,000,000,000 D. 4000
Let U = {21, 22, 23, ..., 40}, A = {21, 22, 23, 24, 25}, 
and 
Use the roster method to write the following set.A'
A. A' = {26, 27, 28, . . . , 40} B. A' = {21, 22, 23, . . . , 40} C. A' = {26, 28, 30, . . . , 40} D. A' = {27, 29, 31, . . . , 39}
The following circle graph displays Chris and Mary Smith's monthly $2900 family budget. Use the circle graph to answer the question. 
How much money is allotted for either rent or food?
A. $1700 B. $1600 C. $1500 D. $1400