The option which is not true regarding sets of numbers is that C. all rational numbers are integers.
Integers are whole numbers such as 2, 6, -5, etc., and rational numbers are fractions.
The formula is 4 cos^3(x)-3 cos(x)
So allison spent 3/5 meaning she saved 2/5 because 3/5 + 2/5 = 5/5
change the 2/5 into decimals by 2 ÷ 5 = 0.4
multiply $55 with 0.4
55 x 0.4 = 22
so she ends up saving $22
Answer:
A closed circle on the number line indicates that the boundary point is included in the solution set
Step-by-step explanation:
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