A question on a math test asked students to "Simplify the expression 7 - 3k + 9k - 23". Kate answered "2 (3k - 8) ". Is she correct or incorrect? Explain. If incorrect, give the correct answer.

Jeff worked 4 2/3 hours in the morning and 3 3/4 hours in the afternoon. How many total hours did he work today?

You gave your friend a short term 1.5 year loan of $30,000 at 2% compounded annually. What will be your total return? $39,436 $37,334 $42,156 $30,904

After spending $2150 for tables and $4050 for chairs, a convention center manager finds that the total is 9% more than he spent on tables and chairs last year. To the nearest dollar, find the amount that he spent last year.

A researcher for paint company is measuring the level of a certain chemical contained in a particular type of paint. If the paint contains too much of the chemical, the quality of the paint will be comprised.

Simplify completely quantity 6 x minus 12 over 10.

28 grams x 10$ = $280 or $200 street price ...

The league championship 800 meter race has 9 runners. In how many different ways they place first, second and third?

Rectangle x measures 7cm by (x+1) cm. Rectangle B has dimensions of (3x+6) cm and 4cm. The area of rectangle X is half the area of rectangle Y. Calculate the lengths of the sides of the rectangles, and hence, their areas.

A gym membership costs $50 to join and $12 each month. write and use an algebraic expression to find the cost of the gym membership for 6 months.

Find the surface area of a cylinder with radius 7 feet and height 16 feet.