2points
what is a double bond?
o
a. an ionic bond between 2 atoms where 2 electrons have been
transferred
o
b. a covalent bond between 2 atoms where each atom contributes 4
electrons
c. a covalent bond between 2 atoms where each atom contributes 1
electron
d
d. a covalent bond between 2 atoms where each atom contributes 2
electrons

It's actually D: A covalent bond between 2 atoms where each atom contributes 2  electrons

Explanation:

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.