Evaluate the expression for the given value of the variable.If C is degrees Celsius, the algebraic expression 1.8c + 32 represents the equivalent temperature in degrees Fahrenheit. Evaluate the expression when C = 40.
A. 40.2° F
B. 40° F
C. 4.6° F
D. 104° F
Answer: D
Mathematics
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Find the domain of the composite function (g ? f)(x). Write the domain in interval notation.f(x) = 
, g(x) = x - 2
A. (-?, 0) ? (0, ?) B. (-?, ?) C. (-?, 0] D. [0, ?)
Mathematics
Simplify. Assume that variables can represent any real number.
A. 7t
B. 24
C. 7
D. 7t2
Mathematics
Solve the problem.A certain number is three times as large as a second number. Their sum is 48. What are the two numbers?
A. 12 and 36 B. 39 and 9 C. 10 and 38 D. 10 and 30
Mathematics
Multiply using the FOIL method.(5x + 8)(5x + 7)
A. 25x2 + 75x + 56 B. 25x2 - 5x + 56 C. 25x2 + 56 D. 10x2 + 15
Mathematics