Answer:
2. A
3. C
4. B
Step-by-step explanation:
2. To answer # 2, just add all the sides together...
(5x-7) + (3x-4) + (2x-6)
= 10x - 17
3. To answer # 3, divide/mulitply both the numerators and denominators by the same number and check to see if that answer matches the displayed answer...
a) 28 divided by 7 is 4, so divide the whole fraction by 7 to see if the fraction is proportional...
28/7 = 4
49/7 = 7
[tex]\frac{4}{7} =\frac{4}{7}[/tex]
b) 4 goes into 16 4 times so multiply [tex]\frac{4}{7}[/tex] by 4...
4 x 4 = 16
7 x 4 = 28
[tex]\frac{16}{28}[/tex] = [tex]\frac{16}{28}[/tex]
c) 4 goes into 16 4 times so multiply the whole fraction by 4...
4 x 4 = 16
7 x 4 = 28
[tex]\frac{16}{28}[/tex] ≠ [tex]\frac{16}{35}[/tex]
d) 4 goes into 20 5 times to multiply the whole fraction by 5...
4 x 5 = 20
7 x 5 = 35
[tex]\frac{20}{35} = \frac{20}{35}[/tex]
C is the answer because the fractions are not proportional.
4) 25% is a quarter of 100%. A third of 100% is 75%.
$120 - 0.25($120) = $90
Another expression for the for sale price is...
B) 0.75($120) = $90
