Graph the system of inequalities. Shade the region that represents the solution set.y? - x2 + 8x - y< 2
A.
B.
C.
D.
Answer: C
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Solve.The cruising speed of a prototype jet is approximately Mach 0.92, meaning 0.92 times the speed of sound. If the speed of sound at cruising altitude is approximately 295 m/s, what is the cruising speed of the prototype jet in miles per hour?
A. 607 mph B. 548 mph C. 660 mph D. 580 mph
Find a general term an for the arithmetic sequence.a1 = 2, d = 4
A. an = 2(4)n-1 B. an = 2n - 4 C. an = 4n - 2 D. an = 4n - 1
Simplify the expression.3y(xy + y) - 5y 2(x - 2 + 3y) + 2(y 3 + y 2)
A. - 2xy 2 + 13y 2 + 12y 3 B. - 2xy 2 + 15y 2 - 13y 3 C. 8xy 2 + 13y 2 - 13y 3 D. 2xy 2 + 13y 2 - 12y 3 E. none of these
State whether the function is continuous at the indicated point. If it is not continuous, tell why.State whether f(t) is continuous at the point t = 9. f(t) =
A. Not continuous; f(t) and f(9) exist but
f(t) ? f(9)
B. Not continuous; f(9) does not exist
C. Not continuous; f(t) does not exist
D. Continuous