If we apply the distributive law, we can write our expression as
since -2*1.5=-3, -2*5=-10, -4*(-0.5)=2 and -4*3=-12, we have
the, by comparing this result with the options, the answer is option A
4x+15y=G insert total hours- 30.5 for x and 1 for y and G will be your answer to problem B
Answer:
19.504
Step-by-step explanation:
divide the mass value by 2.205
1) Unit Rate = 26:1
We already know that for every 3 gallons, you can travel 78 miles. Divide 78 by 3 to get 26. The 26 stands for how many miles you can travel on one gallon.
2) Unit Rate = $7.50:1
Since we already know that for every 7 hours, you earn $52.50, divide 52.50 by 7 to get 7.50. The 7.50 represents how much money you earn in 1 hour.
3) Unit Rate = 52:1
Since you can travel 416 miles in 8 hours, divide 416 by 8 to get 52. The 52 represents how many mile you can travel in 1 hour alone.
Here's a little hint too: (If I remember correctly) For unit rates, it's always going to be *any number* to 1. So even if it's a decimal or a negative, the other side of the rate always has to be 1 :)
The answer would be (x-3)*(x+1)