QUESTION 4 Percentage change
new price-original price
original prlee
x 100
Percentage change can be an increase or a decrease
Calculate 15% of R 980.47
4.2
Calculate the new price of the item in 4.1 after an increase of 15 96
4.3
Calculate the percentage increase of an item that cost R59.99 in 2020 and R 65.99 in 2021
Calculate the percentage decrease of a car that cost R350 000 in 2016 and 1280 000 in 2021
TOTAL 50​

idk the answer but just put a

step-by-step explanation:

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.

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

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