Solve the system by substitution. Use parenthesis and no spaces in your answer.

{
−8x+7y=−17
y=2x+1
-8x+7y=-17y=2x+1

First equation: -8x+7y=-17

Second equation: y=2x+1

Take the value of y from the second equation, as y is already isolated, and plug it in for y in the first equation. Simplify and solve for x.

-8x+7(2x+1)=-17

-8x+14x+7=-17

6x+7=-17

6x=-24

x=-4

Take the value of x we just found and plug it into the first equation. Solve for y.

-8(-4)+7y=-17

32+7y=-17

7y=-49

y=-7

Hope this helps!! :)

binomial distribution

median= 2

range = 7-0 = 7

how to find median?

no. of term=28

median=(28+1)/2=14.5th term

the 14th and 15th term are 2, therefore the median is (2+2)/2 = 2

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24