Question

please answer this one fast

write the first three terms of rule of the sequence described
the first term is 7;the term to term rule is'add 3'

and one more please

work out the value of the expression 2n+1 when n=-5

please answer this as soon as possible

Answer 1

First term = 7
by adding 3 we get, 7+3 = 10
by adding 3, we get, 10+3 =13
by adding 3, we get, 13+3 = 16

So first three terms are 7,10,13
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expression is 2n+1
n = -5
value = 2×(-5) + 1 = -10+1 = -9