Which of the following expressions are equivalent to x - ( - x) + y?

A medication has a half-life of 4 hours after it enters the bloodstream. A nurse administers a dose of 225 milligrams to a patient at noon. Write an expression to represent the amount of medication, in milligrams, in the patient's body at: 1 p. m.

Reuben wants to find the average time it takes Lincoln High School students to run a lap around the track. So he will consider 40 students to find the average time. Answer the questions below.

The temperature in Frederick decreased 8 degrees on Monday morning. By Monday afternoon the temperature increased 8 degrees. What is the overall change in temperature? AST - 0816 standard C

Name the property illustrated in this statement. 5 + (m+p) = 5 + (p+m)

4358 to the nearest thousand

Consider the sum of 3/5 + 3/4. round each fraction and estimate the sum. add the two fractions using a common denominator and then round the result. which estimate is closer to the actual answer.

A restaurant can seat 100 people it has booth that seat four people and tables that seat six people so far five of the booth are full. what expression matches the situation

Solve - 7 = √ 2x - 9.

What is 5/7*w=40 1/2

sierra is supposed to practice flute for a total of 5 1/4 hours every week. this week, she practiced 15 minutes on sunday, 1 hour on monday, 30 minutes on tuesday, 45 minutes on wensday, 15 minutes on tursday, and 45 minutes on friday.