Solve the application by adding or subtracting appropriately. Answer with a complete sentence.At the beginning of the summer, Jon was 49.5 inches tall. By the end of the summer, he had grown 1.6 inches. What was his height at the end of the summer?
A. His height at the end of the summer was 50.1 inches.
B. His height at the end of the summer was 51.1 inches.
C. His height at the end of the summer was 65.5 inches.
D. His height at the end of the summer was 51.2 inches.
Answer: B
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Find the absolute maxima and minima of the function on the given domain.
on the closed triangular region with vertices 
and 
A. Absolute maximum: 7 at 
absolute minimum: 0 at 
B. Absolute maximum: 7 at 
absolute minimum: 3 at 
C. Absolute maximum: 3 at 
absolute minimum: 0 at 
D. Absolute maximum: 10 at 
absolute minimum: 3 at 
Perform the indicated operation. Write the answer without exponents.(8.7 × 103) × (7.7 × 102)
A. 6,699,000 B. 66.99 × 105 C. 669,900 D. 66.99 × 106
Multiply and simplify any radicals in your answer. Assume that all variables represent positive real numbers.(7
)(4
)
A. 280
B. 2800
C. 280
D. 28
Find the direction of the vector  figure 1.png)
a. ? = 30° b. ? = 150° c. ? = 120° d. ? = 210° e. ? = 60°