Question

1. round the result to 2 decimal places. -0.9x+2.8=4.1

a) -2.56
b) -2.56
c) -1.44
d) 2.20

2. jordan has 650 pennies. he plans to give 85 to his brother and split with his twin sister. he wants to know how many pennies to keep for himself. which equation models the situation?
a) 2(85+2x=650
b) 85(x-2)=650
c) 85x=650
d) 85+2x=650

Answer 1

1. -0.9x+2.8=4.1
First subtract 2.8 from both sides.
-0.9x = 1.3
Now divide both sides by -0.9.
x = -1.4444..
This can be rounded to -1.44
c) -1.44

2. Jordan has 650 pennies. He'll give 85 to his brother and split the rest with his sister.
d) 85+2x=650