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 - y = -1
B. x = 1
C. x - y = 1
D. x = -1
Answer: B
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Identify the coefficient, variable(s), and degree.-8y13
A. 13, y, -8 B. 8, y, 13 C. -8, y, 13 D. 13, y, 8
Use the data shown in the scatter plot to determine whether the data should be modeled by a linear function.
A. No, data points do not lie close to a line B. Yes, approximately linear C. Yes, exactly linear
Use the remainder theorem to find P(k).k = -2; P(x) = -x3 + 2x2 - 5
A. -11 B. -14 C. 3 D. 11
Solve the problem.Linda invests $25,000 for one year. Part is invested at 5%, another part at 6%, and the rest at 8%. The total income from all 3 investments is $1600. The income from the 5% and 6% investments is the same as the income from the 8% investment. Find the amount invested at each rate.
A. $8000 at 5%, $10,000 at 6%, and $7000 at 8% B. $10,000 at 5%, $10,000 at 6%, and $5000 at 8% C. $5000 at 5%, $10,000 at 6%, and $10,000 at 8% D. $10,000 at 5%, $5000 at 6%, and $10,000 at 8%