Lian and her younger sister ella are 4 years apart. the sum of their ages is 20. let l be lian’s age in years and let e be ella’s age in years.
the system of linear equations that models the scenario is:
l – 4 = e
l + e = 20
how old is each sister?
lian is years old and ella is years old.

If 1 is divided by the sum of y& 4.the result is equal to 3 divided by 4, find the value of m

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years

Determine if the function below is continuous. a. continuous b. not continuous, 1 hole c. not continuous, > 2 holes d. not continuous, 2 holes