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: 7, -21, 63, -189, 567, . . . .
A. 310,009
B. 310,003
C. 310,007
D. 310,016
Answer: A
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Find the limit.
e-x2 - y2
A. 1 B. 0 C. e32 D. e-32
Find an equation for the line tangent to the curve at the point defined by the given value of t.x = t + cos t, y = 2 - sin t, t = 
A. y = 
x - 
?
B. y = -
x + 
? + 3
C. y = -
x + 
D. y = -
x - 
? + 2
Estimate the sum or difference by first rounding to the nearest ten.36369337
A. 290 B. 279 C. 300 D. 280
Solve the problem.Suppose that R and C play a game by matching coins. If R shows "heads" and C shows "tails", C pays R $2. If R shows "tails" and C shows "heads", R pays C $1. If they both show "heads", C pays R $1. If they both show "tails", R pays C $2.(a) Give the payoff matrix for this game.(b) Decide if the game is strictly determined. If so, determine the optimal strategies for R and C.
What will be an ideal response?