Solve the given equation for x.log41 = x
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem.The year y when sales were s million dollars for a particular electronics company can be modeled by the radical equation y = 1.4
- 7, where y = 1 represents 2010, and so on. Use the model to predict the sales for 2015 to the nearest tenth of a million.
A. $87.2 million B. $90.2 million C. $88.2 million D. $89.2 million
Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation.62 + 123 + 184 + . . . + 489
A. 
B. 
C. 
D. 
Use the formula for the sum of the first n terms of a geometric sequence to solve.Find the sum of the first 11 terms of the geometric sequence: -4, -12, -36, -108, -324, . . . .
A. -354,255 B. -354,312 C. -354,292 D. -354,290
Multiply the polynomials using the special product formulas. Express the answer as a single polynomial in standard form.(7x + 3y)2
A. 7x2 + 9y2 B. 7x2 + 42xy + 9y2 C. 49x2 + 42xy + 9y2 D. 49x2 + 9y2