Determine if the equation is an identity.cot(x + y) = 
A. Identity
B. Not an identity
Answer: A
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Solve the problem.The rate of water usage for a business, in gallons per hour, is given by 
where t is the number of hours since midnight. Find the average rate of water usage over the interval 
A. 0.07 gallons per hour B. 4.24 gallons per hour C. 4.09 gallons per hour D. 4.12 gallons per hour
If f satisfies the equation of change 
, then what can be said about the function 
?
?
A. f is linear with slope 
.
B. f is linear with slope 5.7.
C. f is exponential with growth factor 5.7.
D. f is exponential with growth factor 
.
Express the number in scientific notation.5,300,000
A. 5.3 × 10-7 B. 5.3 × 107 C. 5.3 × 106 D. 5.3 × 10-6
Translate the sentence to an equation using x as the variable. Do not solve the equation.Twenty-four less than a number is equal to the product of five and x.
A. x - 24 = 5 + x B. x - 24 = 5 + x C. 24 - x = 5x D. x - 24 = 5x,