Use a proportion to solve the problem.In baseball, the average number of earned runs given up by a pitcher in 9 innings is the pitcher's earned run average, ERA. For example, if a player gave up 90 earned runs in 250 innings during one year, his ERA is found by solving the proportion 
Find the ERA for a player who, in one year, gave up 105 earned runs in 236
innings. Round your answer to the nearest hundredth.
A. 2.25
B. 20.29
C. 3.99
D. 11.67
Answer: C
Mathematics
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Solve the problem.The number of bacteria growing in an incubation culture increases with time according to 
where x is time in days. Find the number of bacteria when 
and 
.
A. 4800 bacteria; 1,228,800 bacteria B. 4800 bacteria; 76,800 bacteria C. 4800 bacteria; 38,400 bacteria D. 19,200 bacteria; 76,800 bacteria
Mathematics
Find the proceeds to the nearest cent when the following is discounted.Maturity value: $41,700Discount period: 95 daysDiscount rate: 9%
A. $38,047 B. $37,947.00 C. $40,709.63 D. $40,723.19
Mathematics
Graph the circle.(x - 2)2 + (y + 3)2 = 9 
A. 
B. 
C. 
D. 
Mathematics
Simplify.
A. - 
B. - 
C. - 
D. - 
Mathematics