7.50 + 4.25x = 28.75
subtract 7.50 from both sides
4.25x = 21.25
divide each side by 4.25
x = 5
answer: there are 5 people in the family
Given that the recursive formula is:
an=an-1+7
first term is
a1=17
the second term will be:
a2=a(2-1)+7
a2=a1+7
a2=17+7
a2=24
To evaluate for the explicit formula we use the formula:
an=a+d(n-1)
where
a=first term
d=common difference
from the calculations above:
d=24-17=7
thus the explicit formula will be:
an=17+7(n-1)
an=17+7n-7
an=7n+17-7
an=7n+10
Answer: B] an=7n+10
Answer:
A
Step-by-step explanation:
the answer is a
Answer:
Step-by-step explanation: