Answer:
B and D
Step-by-step explanation:
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The expression x=20-3D will present the amount Amy has left after buying D sodas.
Step-by-step explanation:
Given,
Total amount = 20 quarters
Cost of sodas = $0.75 = 0.75*100 = 75 cents
25 cents = 1 quarter
1 cent = 
75 cents = 
= 3 quarters
Amount of D sodas = 3D
Let x be the amount left with Amy.
Amount left = total amount - Amount of D sodas
The expression x=20-3D will present the amount Amy has left after buying D sodas.
Keywords: fractions, subtraction
Learn more about subtraction at:
#LearnwithBrainly
So what you want to do for all of these is move the variable that you want to be the subject to one side of the equation and the other ones to the other side, then divide.
For example:
With number 1, m = 3n + 2p, since you want to make p the subject, first single out p by subtracting 3n from both sides.
m - 3n= 3n + 2p - 3n
2p = m - 3n
Then divide everything by 2.
2p / 2 = m/2 - 3n/2
p = , you could also say 1/2m - 3/2n
p = 1/2m - 3/2n
Next question: just do the same thing.
a = 3c - 4
a + 4 = 3c - 4 + 4
3c = a + 4
/3 /3 /3
c = 1/3a + 4/3
Next question: same process.
P - 2a = 2a - 2a + 2b
2b = P - 2a
/2 /2 /2
b = 1/2P - a
Total = 14 m.
ratio of bows:strips = 3:4
Length for bows = 3/(3+4)*14=6 m
Length for strips = 4/(3+4)*14=8 m
Check: 6m + 8m = 14 m = total, ok.
First of all, we'll break this up . let's start with three. Three is equal to 3.0. Ten hundredths is equal to (10/100) or 0.1. Now let's add them together. 3.0+0.1=3.1
