Susan, Chang, and Henry sent a total of 127 text messages over their cell phones during the weekend. Chang sent 3 times as many messages as Henry. Henry sent 7 fewer messages than Susan. How many messages did they each send?

For a certain value of k, the system x + y + 3z = 10, -4x + 2y + 5z = 7, kx + z = 3 has no solutions. What is this value of k?

Solve for x. 5+x + (-2) = - 8

La expresion 18+2^3 / 4x2

Evaluate the expression. (15 + 6) divided by three

Dallas got a raise. His hourly wage was increased form $9 to $10.25? What was the percent increase in Dallas's wage to the nearest whole percent?

Summarize how to rewrite a rational power as a radical term. Provide an example of your own.

Andy canoe is 2.7 meters long. how long would it be in milliters?

5,000 mL is equal to: 5 L 0.005 L 5,000 cm² 5,000 cm³

Find the radical equivalent of 272/3 and compute it.

Simone takes dance lessons. Her shoes cost $150 per year, her tights and leotards cost $70 per year, her hair accessories cost $15 per year, and the dance lessons cost $1,000 per year. How much will Simone pay for five years of dance lessons?