A cabinet set was sold at RM 9500 after a markup of 6.5%. Find the original price and the markup amount.

1) The original price is 8920 2) The mark up is 580

Step-by-step explanation:

!)We need to find out the initial price, suppose it is equal to 100 percents. The price was raised and it has reached 100+6.5= 106.5 percents . 106.5 percents from initial price is the new price (RM 9500). Find out the value of one percent

9500:106.5= 89.2 (approximately).

2)Then find the original price multiplying the value of percent by 100. 89.2*100= 8920 - initial price

3)Then mark up is a remainder between old price and new price . It is  9500-8920= 580.

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.