Fred works 30 hours a week between two parttime jobs a waite

Fred works 30 hours a week between two part-time jobs: a waiter ($9.25 per hour) and a math tutor ($8.5 per hour). Define a function t that determines the total amount of money Fred makes in a week in terms of the number of hours x he works as a math tutor. A) B) t(x)-8.5x +(30-x)9.25 f(t) = 8.5x + (30-x)9.25 WRONG! tx)-9.25x+ (30-x)8.5 t(x) = 8.5x D)

Solution

x is the no of hrs he teaches
So, remaining (30 - x) hrs , he works as a waiter

For x hrs, as a math teacher, he makes 8.5$ per hr
So, this is 8.5*x = 8.5x dollars in all

For (30-x) hrs as a waiter, he makes 9.25$ per hr
So, this is 9.25(30 - x) dollars

Adding them up. we get :

t(x) = 8.5x + 9.25(30 - x)

Option A