6 Write a number sentence to describe the order of operations in each of the following expressions.a c + 8 b 11 − x c x_5d 9_10

It seems like there might be some confusion in the question as it's not clear what operations are being performed in each expression. However, I'll try to interpret and provide a number sentence for each.

a) c + 8 This is a simple addition operation. The number sentence could be "c added to 8."

b) 11 - x This is a simple subtraction operation. The number sentence could be "11 minus x."

c) x_5 This seems to be a variable with a subscript, which is often used in sequences or series in mathematics. If "x_5" represents the 5th term in a sequence, the number sentence could be "the fifth term of sequence x."

d) 9_10 This also seems to be a number with a subscript. If we interpret this as base notation, this could mean the number 9 in base 10. The number sentence could be "9 in base 10."

Please provide more context or clarify the operations if my interpretations are not correct.