Sarah’s age is four years less than twice Tanya’s age. In two years, four times Tarah’s age will be three times what Sarah’s age will be. How old is each girl now? SHOW WORK!!

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.

What are the excluded values? m+5/mn+3m

If the car had not hit the fence, how much farther would it have skidded? solve the skid-distance formula to find the extra distance that the car would have traveled if it had not hit the fence. round your answer to two decimal places. note that unit conversion is built into the skid distance formula, so no unit conversions are needed.