13. A hotel rents a double-occupancy room for $20 more than a single- occupancy room. One night, the hotel took in $3115 after renting 15 double-occupancy rooms and 26 single-occupancy rooms. Write and solve a linear system to find the cost of renting a double- occupancy room and the cost of renting a single-occupancy room.

Q: Letter C is 59E, not 53E

A: We need to write (59E)twelve in base 10. (It is given that face value of E is 11)

Q: 25+2=

A: First we calculate 2^5.2^5= 2x2x2x2x2=32

Q: Number 43, please.

A: Given that  2+4+6---------+70  To fidn the sum

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A:

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A:

Q: Number 28

A:

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A:

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A: Given expression is:

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A: Any number between 851 to 899

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Q: 18

A:

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A:

Q: Number 24, please.

A: detailed solution is given below

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A: Note- Since you have asked multiple question, we will solve the first question for you. If you want…

Q: Number 284

A: Given revenue function: R(x)=-x2+8x

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A:

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A:

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A: 56 + 70 = ?

Q: to 20

A: Given that: