Evaluate the expression. Write answer without exponents.491/2
A. 14
B. 28
C. 7
D. 3.5
Answer: C
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Answer the following statement(s) true (T) or false (F)
Even if teachers write tasks with high levels of cognitive demand, the tasks can deteriorate to lower levels of demand when enacted in classrooms.
Change the logarithmic expression to an equivalent expression involving an exponent.logb 27 = 3
A. 3b = 27 B. 27b = 3 C. 273 = b D. b3 = 27
Determine whether the given function is one-to-one. If it is one-to-one, find a formula for the inverse.f(x) = x 
A. f-1(x) = x2 + 3
B. f-1(x) = x3 - 3
C. f-1(x) = x 
D. Not one-to-one
Solve the problem.The formula P = 14.7e-0.21x gives the average atmospheric pressure, P, in pounds per square inch, at an altitude x, in miles above sea level. Find the average atmospheric pressure for an altitude of 2.3 miles. Round your answer to the nearest tenth.
A. 11.0 lb/in.2 B. 7.8 lb/in.2 C. 9.1 lb/in.2 D. 8.4 lb/in.2