Find an explicit formula for the arithmetic sequence −
31
,
−
27
,
−
23
,
−
19
,
.
.
.
−31,−27,−23,−19,...minus, 31, comma, minus, 27, comma, minus, 23, comma, minus, 19, comma, point, point, point.
Note: the first term should be
b(1)
b(1)start text, b, left parenthesis, 1, right parenthesis, end text.
b
(
n
)
=

One shot. if 60% of 10 is 6, then what is 70%? we know it would be seven (since 60% is mathematically 60/100, or 6/10, then 70% is 70/100, or 7/10) but we can check anyway using ratios: 6 : 60% = x : 70%*inverse multiplicationx * 60% = 6 * 70%*divide both sides by 60%x = (6 * 70%) / 60%x = 7and since he has made 6 shots already, he would need just one more to get 7 shots or 70%. if the explanation is too confusing, comment and i will try to