Solve the problem.Given the area A of a circle, the formula r = 
can be used to calculate the radius of the circle. Find the area when the radius is 4.2 cm.
A. A = 18.66? sq cm
B. A = 17.64 ?2 sq cm
C. A = 17.64? sq cm
D. A = 17.64 sq cm
Answer: C
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Find the exact value in radians.cos-1 0
A. ?
B. 
C. 
D. 0
Given p is true, q is true, and r is false, find the truth value of the statement.~q ? (p ? ~r)
A. False B. True
Provide an appropriate response.Willie went Christmas shopping. He spent $75, $93.59, $10.99, $5.59, $22.96, and $6.69. He rounded the values to whole numbers and wrote a check for the sum before he got to the register. Find the estimated sum and the actual sum, and decide if it was enough to cover the bill.
A. $201; bill was $214.82; no B. $216; bill was $214.82; no C. $223; bill was $214.82; yes D. $213; bill was $216.00; no
Provide an appropriate response.Interest rates on mortgages may vary from bank to bank.
A. True B. False