Answer:
16+3x=22.75
22.75-16=6.75
6.75÷3=2.25=x
x=3/14
3 over 14
hope this helps
x^2+8x+15
Step-by-step explanation:
You can use FOIL method
(x*x)+(x*5)+(3*x)+(3*5)
x^2+5x+3x+15