I wrote the equation 54x=257, where x=number of hours used reading, which means you have to solve for x. which is 4.76
4
<span> ∑ [100(−4)n−1]
n=1
Once again, since this is summation notation:
</span>Start at the number on the bottom. Plug in that number to the equation on the right, plug in the next number into the equation on the right, and so on, until you get to the number on top. Plug in that final number, and after you get the solution, add all the solutions you have all together.
<span>One thing though: <span>the bottom number cannot be bigger than the number on top.
</span></span>
n=1; 100 x (-4) x (1) - 1 = -401
n=2; 100 x (-4) x (2) - 1 = -801
n=3; 100 x (-4) x (3) - 1 = -12001
n=4; 100 x (-4) x (4) - 1 = - 16001
-401-801-12001-16001 = -29204
Answer:
y=-3x
Step-by-step explanation:
we know that the equation of the line is:
y=mx+b
m= slope= (y2-y1)/(x2-x1)
we have two points giver from the graph:
point 1: (0,0)
point 2: (3,-9)
we to find the slope:
m=(-9-0)/(3-0)
m=-3/3
m=-3
we need to find "b"
using the point (0,0)
we have
0=0x+b
so we have b=0
finally we have
y=-3x+0
y =-3x
Chips and number lines support the answer because they can show the answer
