Provide an appropriate response.Solve the system of equations using the substitution method:3a + 4b = 162a - b = -15
A. a = 0, b = -4
B. a = 7, b = -1
C. a = 7, b = -4
D. a = -4, b = 7
Answer: D
Mathematics
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A. - 
B. 
C. - 
D. 
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Fill in the blank(s) with the appropriate word(s).
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where x and y are in meters. Refer to the figure and determine the height h of the outside walls.A = 3 m
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Mathematics