Solve for y (change the equation to slope-intercept form.
2y = 2x + 8. Divide each term by 2
y = x + 4.
So slope is 1
7 out of 10 would vote for Tammy so what value (x) would vote for her out of 230. Set up a proportion comparing the two.
x= # of people who vote Tammy
7 out of 10= x out of 230
7/10= x/230
cross multiply
(7*230)= (10*x)
1610= 10x
divide both sides by 10
161= x
ANSWER: 161 people in 7th grade would vote for Tammy.
Hope this helps! :)
Answer:
750.88 (rounded to 2 d.p.)
Step-by-step explanation:
100% --- 731
100% + 7% ---
× 731 = 782.17
100% --- 782.17
100% - 4% ---
× 782.17 = 750.88 (rounded to 2 d.p.)
A. (4, -7) Is the correct answer!
2 x 4 = 8 8 - 15 = -7 True!
4 x 4 = 16 3 x -7 = -21 16 + -21 = -5 True!
Since both statements are true, this is the solution to the system.