Linear Equations

Question 1

2(x - 4) = x

Answer 1

combine like terms

x = 8

Question 2

If Roger (R) paid $5,500 which is 25% more than what Andy (A) paid, how much did Andy pay?

Answer 2

1.25A = R

so Andy = $4,400

Question 3

plot these points

If point A, B, C, and D lie on a number line such that B is the midpoint of AD and C is the midpoint of BD

Answer 3

A B C D
___4____–2—-2–
_______8______

Question 4

two thirds of Vanessa’s family go to her party. Halfway through the party, 13 relatives left and 15 stayed.

what percent could you multiply 15+13 by to know how many relatives she has in total?

Answer 4

2/3 = 0.6666667

so 15 + 13 = 28 * 1.6 = 44.8 which is less than 45

Question 5

If a sales person gets b percent of $48,000 and it equals $24,000 then what is b?

Answer 5

b = 50

NOT .5