INTERPRET PROBLEMS When Santo was born, his uncle put money in a bank account to help pay for a car when Santo became a teenager. Each birthday, his uncle adds
$200 to the account. When Santo was 10, there was $4000 in the account.

Astudent simplified a rational expression as shown.

3-12. write each answer with a reasonable number of figures. find the absolute uncertainty and percent relative uncertainty for each answer. (a) [12.41 (±0.09) + 4.16 (±0.01)] x 7.068 2 (±0.000 4) =? (b) [3.26 (±0.10) x 8.47 (±0.05)] - 0.18 (±0.06) =? (c) 6.843 (±0.008) x 104 + [2.09 (±0.04)- 1.63 (±0.01)] =?

Solve 3x-18=2y and 5x-6y=6 by elimination show work