Find the circle's circumference or area, as requested. Use 3.14 as the approximate value of ?, and round your answer to the nearest tenth.Find the area.
A. 157 cm2
B. 314 cm2
C. 1962.5 cm2
D. 7850 cm2
Answer: C
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For the curve r(t), find an equation for the indicated plane at the given value of t.r(t) = (cosh t)i + (sinh t)j + tk; rectifying plane at t = 0.
A. x = 1 B. x - y = 1 C. x - y = -1 D. x = -1
Solve the problem.The stadium vending company finds that sales of hot dogs average 45,000 hot dogs per game when the hot dogs sell for $2.50 each. For each 50 cent increase in the price, the sales per game drop by 5000 hot dogs. What price per hot dog should the vending company charge to realize the maximum revenue?
A. $4.50 B. $3.50 C. $2.00 D. $3.75
Determine the slope, if it exists, of the graph of the given linear equation.f(x) = 5 + 4x
A. m = 5 B. m = 4 C. m = -5 D. m = -4
Factor any perfect square trinomial, or state that the polynomial is prime.121x2 - 22x + 1
A. (11x + 1)(11x - 1) B. prime C. (11x - 1)2 D. (x - 11)2