The life expectancy E, in solar lifetimes, of certain stars depends on their mass M, in solar masses. The relationship is 
.
How does the life expectancy of larger stars compare with that of smaller stars? A graph of E versus M can help you answer this question.
?
A. Larger stars live 2.5 times as long as smaller stars.
B. Larger stars have longer life expectancy.
C. Larger stars have shorter life expectancy.
D. All of the above.
Answer: C
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Find the pair of numbers whose product and sum are given.Product: 18 Sum: -11
A. 2 and 9 B. 2 and -9 C. -2 and 9 D. -2 and -9
Find the circle's circumference or area, as requested. Use 3.14 as the approximate value of ?, and round your answer to the nearest tenth.Find the circumference.
A. 47.1 mi B. 94.2 mi C. 188.4 mi D. 706.5 mi
Find the distance between the point (9,9,3) and the plane 15x-3y-8z= 10. Round your answer to two decimal place.
Select the correct answer. a. 4.79 b. 6.79 c. 4.29 d. 7.79 e. 5.79
Perform the operation and reduce to lowest terms.5
÷ 2
A. 
B. 2
C. 3
D. 12