Answer:
x + y = 5
3x + 3y = 15
Step-by-step explanation:
let x represent apple and y represent orange
Hence x + y = 5
and 3x + 3y = 15
Solving both equations simutaneously
From first equation, x = 5-y
Substitute x=5-y into the second equation
3(5-y)+3y = 15
y= 0
x = 5-0 = 5
<u>Given</u><u> </u><u>:</u><u>-</u>
<u>To </u><u>Find</u><u> </u><u>:</u><u>-</u>
- The input when output is 21 .
<u>Answer </u><u>:</u><u>-</u>
The given function is ,
Substitute f(x) = 21 ,
- 21 = 2x + 5
- 21 - 5 = 2x
- 16 = 2x
- 16/2=x
- x = 8
I think 20 hope that helps
