Hi uwu pls me with math i'm bad at it : (

1) you are using the equation 4(p – 7) = 44 to determine how many pictures can be saved at one time to the photo stream on your cell phone. describe the operations in the order that you will perform them to solve the equation.

2) how many pictures can you save at one time to the photo stream on your cell phone? solve the equation you wrote in part a to find the unknown variable.

3) the phone case you want to buy is marked down 30%, and you have a 25% off coupon. you pay $42.00. can this equation be used to find the original price of the phone case? if so, what is the original price of the item? explain.
3/4(0.7c) = 42

1. 4(p - 7) = 44

4p - 28 = 44

Need to move 28 to the other side so we have 4p= ...

4p = 44 + 28

4p = 72

4p/ = 72/4

p = 18

2.

3. Simplify 30% to 0.30 and after multiply by 42 so you will get 12.6 and then simplify 25%, and you get  10.5 and after you will add it to $42.00 and you will get $65.10 which is you answer

let's add {f(x)=x+1}f(x)=x+1 and {g(x)=2x}g(x)=2x together to make a new function.

f(x)+g(x) =(x+1)+(2x)=x+1+2x=3x+1

let's call this new function hh. so we have:

{h(x)}={f(x)}+{g(x)}{=3x+1}h(x)=f(x)+g(x)=3x+1

we can also evaluate combined functions for particular inputs. let's evaluate function hh above for x=2x=2. below are two ways of doing this.

method 1: substitute x=2x=2 into the combined function hh.

h(x)

h(2)

​    

=3x+1

=3(2)+1

=7

​ since h(x)=f(x)+g(x)h(x)=f(x)+g(x), we can also find h(2)h(2) by finding f(2) +g(2)f(2)+g(2).

first, let's find f(2)f(2):

f(x)

f(2)

​    

=x+1

=2+1

=3

​  

now, let's find g(2)g(2):

g(x)

g(2)

​    

=2x

=2⋅2

=4

​  

so f(2)+g(2)=3+4=\greend7f(2)+g(2)=3+4=7.

notice that substituting x =2x=2 directly into function hh and finding f(2) + g(2)f(2)+g(2) gave us the same answer!