4 1/2 + 2 4/5
4 + 2 = 6
1/2 + 4/5 = 5/10 + 8/10 = 13/10 = 1 3/10
6 + 1 3/10 =
7 3/10 <===
Suppose the company invests x of their surplus in the 5% rate (and thus 40000-x has 6.5%). Then we have that 5%*x+(40000-x)6.5%=6.25%*40000.
We have that solving this, 5%* x+40000*6.5%-6.5%*x =6.25%* 40000 Accumulating terms, 1.5%*x=0.25%*40000 x=40000/6= 6666.67$. We see that if we invest 6666.67$ at 5%, we get exactly the given rate. If we invest more, we obviously get less. Hence, we have that the company has to invest at 6.5% more than 40000-6666.67=33333.33$
$3000 per minute is how much Aerosmith earned.
When graphing Y=3X-5 you want to start looking at the Y axis or the vertical line that goes up and down. You need to draw your first point or dot on the vertical line starting at negative five (-5). Then you start to go up 3 boxes and over 1 box or to the right one box because the equation has 3x in it . So after starting at negative 5 you want to travel up 3 and over 1, up three and over 1, do this until your graph can no longer go on or is not bug enough. Did i answer your question?