Perform the indicated operations and express answers in simplest form.

3/x + 2/y - 4/xy

Simplify the expression if possible by combining like terms 9 (X+5) + 7 (X-3)

In the proportion 2/h=k/10, what happens to the value of h as the value of k decreases?

Caffeine is the active ingredient in coffee and many energy drinks. Once caffeine is consumed it has a half-life in the body of approximately 4 hours. An average cup of coffee contains 100mg of caffeine.

The plates need to go on a tray to be fired in the kiln. The tray is 90cm x 40cm. Each plate has a radius of 8cm. There needs to be a 2cm gap around each plate. How many will fit on the tray?

What is the value of x in the inequality start fraction 15 plus x over three end fraction minus seven less than x? x < - 3 x < 3 x > - 3 x < 18

Aaron, a car salesman at KIA, makes 4% commission on all sales he sells 5 cars for $15,000 each. What was the total commission on his sales.

What is y + 10 = - 3 (x + 10) in slope-intercept form?

Find the values of x when y = 1 y=x^2 - 2x-3

Five girls share 4 sandwiches equally. What fraction of the sandwich does each girl get?

What is the distributive property of 25