Find the inverse of the one-to-one function.f(x) = 
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = 
Answer: D
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Solve the problem.Regrind, Inc. regrinds used typewriter platens. The cost per platen is $2.90. The fixed cost to run the grinding machine is $308 per day. If the company sells the reground platens for $6.90, how many must be reground daily to break even?
A. 51 platens B. 77 platens C. 106 platens D. 31 platens
Combine like terms.9.6a + 9.1b - 5.6a - 7.6b
A. -4.0a + 1.5b B. 4.0a + 16.7b C. 15.2a + 16.7b D. 4.0a + 1.5b
Write the decimal as a percent.In an extended care facility, 0.1438 of the residents require a particular heart medication. Write this decimal as a percent.
A. 0.1438% B. 14.38% C. 1.438% D. 1438%
Solve the problem.A parallelogram has a base of length x + 7 and a height of x + 2 and has an area of 50 square units. Find the base and height of the parallelogram. (A = bh)
A. height = 2 units; base = 25 units B. height = 1 unit; base = 50 units C. height = 6.25 units; base = 8 units D. height = 5 units; base = 10 units