Set up a proportion
42.50/5=x/8
5x=340
x=68
He would earn $68
{3x+2y=4 /*5
{4x+5y=17 /*(-2)
{15x+10y=20
<u>{-8x-10y=-34 </u>(+)
<em>7x=-14</em><em />
<em>x=-2</em>
15x+10y=20
15*(-2)+10y=20
-30+10y=20
10y=50
<em>y=5</em>
Answer:
f(x)=−5x−20
Step-by-step explanation:
It's decreasing 5 degrees every hour, which is represented by -5x
You also have to take away the 20 (-20) from where it started.
So, f(x)=−5x−20
Y^2+5y+10
To 2 Squared go together the regular y go together and then normal go together
Answer:
72 in. squared
Step-by-step explanation:
12 times 6 = 72
