15 percent of what equals 18

A chair's regular price is $349. It is on clearance for 30% off, and a costumer uses a 15% of coupon after that. What is the final cost of the chair before sales Tax?

X-cubed+3x-squared+5x+8/x+1

7) The circumference of a circle is 113.04 meters. a) What is the diameter? b) What is the radius of the circle?

Y=x^2+12x+23 identify the vertex and the y intercept

The rent for an apartment is $800 per month. The landlord charges one month's rent as a deposit plus a nonrefundable damage cost of $250. The expression 800 (n + 1) + 250 represents the cost of the renting the apartment for n months.

Evaluate 2 (x - 4) + 3x - 72 for x = 3.

During a checkers game, there are 16 pieces left. The ratio of black to red is 3 : 5. How many black pieces are on the board?

The sides of a square are increased by a scale factor of 2. The area of the larger square is what percent of the area of the smaller square?

Solve - 2/3x > 8 or - 2/3x - 12 or x - 6} 3. x

Rewrite. 86 in scientific notation