Evaluate the expression using the given value of the variables.(x + 4y)2 for x = 3, y = 3
A. 15
B. 49
C. 225
D. 30
Answer: C
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Simplify. Be sure to rationalize all denominators. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 3
Use inequality notation and interval notation to describe the set. ? y is at least -4 and less than 0. ?
A. Inequality : -4 > y ? 0Interval : [-4, 0) B. Inequality : -4 ? y < 0Interval : [-4, 0) C. Inequality : -4 < y < 0Interval : (-4, 0) D. Inequality : -4 ? y < 0Interval : [-4, 0) E. Inequality : -4 < y < 0Interval : [-4, 0)
Evaluate the sum.
A. 131 B. 135 C. 119 D. 123
Solve.A fire fighter needs to estimate the height of a burning building. She estimates the length of her shadow to be 7
feet long and the length of the building's shadow to be 30 feet long. Find the height of the building if the fire fighter is 5
feet tall.
A. 45 ft B. 50 ft C. 37.875 ft D. 20 ft