Caden buys 3.9 pounds of grapes that cost $1.80 per pound. Which expression can be used to find the total cost of the grapes?
(3+0.9) 1+ (3 +0.9) x 8
(3 x 0.9) 1+(3 x 0.9) x 8
(3 x 0.9) 1+ (3 x 0.9) x0.80
(3 +0.9) 1 + (3+09)x 0.80

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.

yes

step-by-step explanation:

yes

the terms of a geometric sequence can be found by beginning with the first term and multiplying by the common ratio repeatedly. a recursive formula for a geometric sequence with common ratio r is given by an=ran−1 a n = r a n − 1 for n≥2 n ≥ 2 .

step-by-step explanation: