Answer: -1t + 720
Step-by-step explanation:
He worked at both jobs for 90 hours for this month.
He worked t hours as a tutor which means that as a waiter he worked;
= 90 - t hours
The amount earned is therefore;
= 7t + (8 * (90 - t))
= 7t + 720 - 8t
= -1t + 720
Answer:
The multiplicative rate of change of the function is 
Step-by-step explanation:
You are given the table

An exponential function can be written as

where b is the multiplicative rate of change of the function.
Find a and b. Substitute first two corresponding values of x and y into the function expression:

Divide the second equality by the first equality:

Substitute it into the first equality:

So, the function expression is

Check whether remaining two values of x and y suit this expression:

So, the multiplicative rate of change of the function is 
It CAN'T equal 21, since 9+10=19
BUT, if the 9 was changed to like, 11 - Then it would = 21, or if the 10 was changed to a 12, it would make 21 also,
Answer:
A and C
Step-by-step explanation:
I just answered the question.
Answer:
18 fiction = 3
12 non fiction= 2
Step-by-step explanation: