Two siblings, Matthew and Katie, are working hard to save money to go on a summer trip with their family. Both started with some money, and they both have jobs where they are paid by the hour.
The following graph shows their projected savings:
Matthew's projected savings is modeled by:
m(t )= 12.50t + 350
Katie's projected savings is modeled by:
k(t) = 10t + 425
In both functions, t is the number of hours worked.
How much money will Katie have saved after working 20 hours?
options:
$450
$625
$575
$600
