Solve.If 8 sandwich rolls cost $2.08, how much will 30 rolls cost?
A. $8.36
B. $16.64
C. $18.64
D. $7.80
Answer: D
Mathematics
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Solve the equation. Use words or set notation to identify equations that have no solution, or equations that are true for all real numbers. 7(x + 3) = 7x + 21
A. {x|x is a real number} B. {42} C. ? D. {0}
Mathematics
Simplify the exponential expression.
A. 
B. x6
C. 
D. 
Mathematics
Simplify.320 - 34? 24 ÷ (4?3 - 2?2)
A. 77 B. 474 C. 717 D. 154
Mathematics
An investor invests $1000 at 10% compounded quarterly for 4 years. At the end of the 4 years, the total amount in the account is reinvested at 8% compounded quarterly for another 5 years. How much is in the account at the end of 9 years?
What will be an ideal response?
Mathematics