Simba

Mathematics

12 August, 12:43

Abel and Zöe's grandparents opened a savings account for an equal amount upon the birth of each child. Now, the values of their accounts could be found by the following expressions, where t represents the years since 2011.

Abel: y = 1266.77 (1.03) t

Zöe: y = 1159.27 (1.03) t

Based upon this information, find the difference in the children's ages.

Abel is ___ years older than Zöe.

Suggestions: Find the ratio 1266.77/1159.26. What does that ratio represent in terms of powers of 1.03? You also can graph both equations and figure out the shift.