Solve. Round to the nearest percent if necessary.A company increased the number of its employees from 110 to 132. What was the percent of increase?
A. 120%
B. 22%
C. 20%
D. 17%
Answer: C
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Solve the problem.A box of instant brownies has the list of ingredients shown in the table. Use this information to find the amount of the stated ingredient you would need to make the indicated number of servings.
Water3 tablespoonsOil
cupNuts
cupBrownie Mix2
cupsAmount of oil for 15 servings
A. 
cup
B. 1
tablespoon(s)
C. 
cup
D. 
cup
Solve the equation. Express radicals in simplest form.(r + 2)2 = 14
A. {2 + 
, 2 - 
}
B. {12}
C. {-2 + 
, -2 - 
}
D. {
, 
}
Suppose that a company's sales volumey(in dollars) is related to its advertising expendituresx(in dollars) according to 
Find the rate of change of sales volume, with respect to advertising expenditures when x = $70. Round your answer to two decimal places.
A. 2.96 B. 0.84 C. 0.66 D. 0.19 E. 0.24
Solve the system of equations using substitution.
A. x = -5, y = 57; x = 0, y = 2 or (-5, 57), (0, 2) B. x = 5, y = -3; x = 2, y = -6 or (5, -3), (2, -6) C. x = -5, y = 57; x = -2, y = 18 or (-5, 57), (-2, 18) D. x = 5, y = -3; x = 0, y = 2 or (5, -3), (0, 2)