How many years, to the nearest tenth would it take for an investment of $100 to double if it is earning a continuous compound interest of 3.5% per year? (A) 17.4 years (B) 19.8 years (C) 22.5 years (D) 25.1 years​

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1

she will do 520 after 52 weeks

hope this : )