Answer:
15.12
Step-by-step explanation:
so if you do it on paper it will look like this
1
3.6
x 4.2/
=======
1.72
+14.40
========
15.12
361 times 1 is 361
hoped i helped!!
For the Item that costs $64 before tax the sales tax is $6
Hence for the item that costs $1 before tax the sales tax is $(6/64), by the rule of proportions or unitary method
Hence for the item that costs $100 before tax the sales tax is $[100*(6/64)], by the rule of proportions
which is = $75/8 or $9.45
Therefore, the item having a Sales tax of $9.45 or $75/8 costs $100 before tax
thus the item having a Sales tax of $1 costs $[(100*8)/75] before tax, by the rule of proportions or unitary method
thus the item having a Sales tax of $8.25 costs $[(100*8*8.25)/75] before tax, by the rule of proportions
which is = $88
The factors of the trinomial to the given quadratic expression are (x+1) and (x-4)
<h3>Factoring quadratic equation</h3>
Given the quadratic equation below
f(x) = x^2 - 3x - 4
Factorize
f(x) = x^2 - 4x + x - 4 = 0
f(x) = x(x - 4) + 1(x - 4) = 0
(x+1)(x-4) = 0
Hence the factors of the trinomial to the given quadratic expression are (x+1) and (x-4)
Learn more on solution to quadratic equation here: brainly.com/question/1214333
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