13. a and b are the X-intercept and Y-intercept respectively. If 2a + b = 6 and the
line passes through the point (1,1). Find the equation of the straight line.
160
Unique's Optional Mathematics.

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.

which fault and or fold did you find most difficult to diagram

is it multiple choice?

the correct answer was location c, because earth is tilted away from the sun at this time