Can someone me with these questions?

3) a. 16

b. 30

c. 22

4) 1

Step-by-step explanation:

3) To solve this problem you must substitute the values of a and b into each expression, as you can see below:

a.

b.

c.

4) To solve this exercise you must substitute the values of x, y and z into the given expression, as following:

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.

answ5

step-by-step explanation:

u have to pay atttion to me