21= 1,3,7,21
30= 1,2,3,5,6,10,15,30
common factors= 1,3
Answer:
(-2, -4.5)
Step-by-step explanation:
We can solve this equation with substitution.
x=2y+7
3x-2y=3
We can "substitute" 2y+7 for x into the second equation:
3(2y+7)-2y=3
Distribute the 3
6y+21-2y=3
Add like terms
4y+21=3
Subtract 21 from both sides
4y=-18
Divide both sides by 4 to isolate y
y=-4.5
Plug -4.5 back in for y:
x=2(-4.5)+7
x=-9+7
x=-2
(x,y)=(-2,-4.5)
Hello! The answer to your question would be as followed:
<u><em>4.98 x 10^5 </em></u>
f(3) = -4 as 3 lies between 2 and 5
