Answer:
you have to convert them to equivalent units (the same denominators)
Step-by-step explanation:
first, multiply 2 and 7 by 4.
now you have 8/21.
then, make the other fraction the same value.
multiply 1 and 4 by 7.
7/21.
now your equation is 7/21 + 8/21= 15/21.
ABC. No image attached btw
I don't like dividing polynomials so I'm going to set x=1 and try them out.
(1-2-14+3)/4 = -3
Of the choices, only D gives -3 when x=1
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That's as much test-taking as math. If we were to divide
x^2 - 5x + 1
-------------------------------
x + 3 | x^3 - 2x^2 - 14x + 3
x^3 + 3x^2
-5x^2 - 14x
5x^2 + 15x
x + 3
x + 3
More work, still choice D
Shorts - 6s
Blazer - 3s
6*s + 3*s = 139.5
9s=139.5
s=139.5/9
s=15.5
blazer - $46.5
