Use the distributive property to rewrite the algebraic expression without parentheses. Then simplify the result, if possible.- 
(7x - 21)
A. 6x
B. -3x + 9
C. -3x - 9
D. 3x - 9
Answer: B
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Use a vertical format to add the polynomials.4y
7 + 7y
6 + 8
A. 6 + 14y7 + 10y6 B. 30y13 C. 6y7 + 14y6 + 10 D. 10y7 + 11y6 + 9
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. What are Mr. Cameron's expected concert earning?
A. $300,000 B. $360,000 C. $60,000 D. $218,400
Find the exact value of the expression if ? = 60°. Do not use a calculator.f(?) = sin ?Find 12 f(?).
A. - 
B. 6
C. - 
D. 6
A survey of 100 bank customers revealed that 58 of them have a savings account, 63 of them have a checking account, 22 of them have a savings account and a loan, 16 of them have a checking account and a loan, 27 of them have only a checking account, 12 have a savings account and a checking account and a loan. Assume that every customer has at least one of the services. Determine the number of customers who have a checking account but no savings account.
Fill in the blank(s) with the appropriate word(s).