Write the explicit formula for the geometric sequence. a1=-5 a2=20 a3=-80 a- an=4(-5)^n-1 b- an=-5 *(4)^n c an=-5*(-4)^n d an=-5(-4)n-1

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b.you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c.you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d.you spend $5 plus $10 per week until you have less than $45.

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.