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Answer:
b = a + 3.75
Step-by-step explanation:
a = 4b - 15
You are solving for b. Isolate the b. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. First, add 15 to both sides
a (+15) = 4b - 15 (+15)
a + 15 = 4b
Next, divide 4 from both sides. Remember to divide from all terms.
(4a + 15)/4 = (4b)/4
b = (4a)/4 + (15)/4
b = a + 15/4
b = a + 3.75 is your answer
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Answer:
A
Step-by-step explanation:
all can divide by 4
12/4 = 3
16/4 = 4
Answer:
an = 4n - 1
a1 = 3
a2 = 7 = 3 + 4
a3 = 11 = 3 + 4.2
a4 = 15 = 3 + 4.3
a5 = 19 = 3 + 4.5
.....
=> this is a arithmetic with a1 = 3 and d = 4
=> an = 3 + 4(n - 1) = 4n - 1
