Find all points where the function is discontinuous.
A. x = -2, x = 1
B. None
C. x = -2
D. x = 1
Answer: D
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Two chemicals react to form another chemical. Suppose that the amount of chemical formed in time t (in hours) is given by 
where x(t) is measured in pounds.
a. Find the rate at which the chemical is formed when t=4. Round to two decimal places. b. How many pounds of the chemical are formed eventually?
12 full crates of walnuts weigh 414 pounds, whereas an empty crate weighs 7 pounds. How much do the walnuts alone weigh? ?
A. 407 pounds B. 402 pounds C. 330 pounds D. 421 pounds E. 323 pounds
Divide using long division.(x2 - 3x - 40) ÷ (x + 5)
A. x2 - 8 B. x - 3 C. x - 8 D. x2 - 3
Find the vertices of the hyperbola.16(x + 1)2 - 4(y - 1)2 = 64
A. (-3, 1) and (1, 1) B. (-1, 5) and (-1, -3) C. (-1, -1) and (3, -1) D. (1, 3) and (1, -5)