Question

Andrew solved the following inequality and his work is shown below:

−4(x + 8) + 25 ≤ −2 + 1(x − 50)
−4x − 32 + 25 ≤ −2 + 1x − 50
−4x − 7 ≤ 1x − 52
−5x ≤ −45
x ≤9

What mistake did Andrew make in solving the inequality?

He subtracted 1x from both sides when he should have added 4x.

When dividing by −5, he did not change the ≤ to ≥.

He added 7 to both sides when he should have added 52.

He did not make a mistake.

Answer 1

Anser choice b?

Answer 2

answer

Answer 3

idk this one

Answer 4

Okay hun, @divu.mkr

Answer 5

ohh its b

Answer 6

thank you :)

Answer 7

problem is in last step... dividing/multiplying with a negative no. change equality signs..

Answer 8

so b right?

Answer 9

B was correct

Answer 10

right..

Answer 11

A cab charges $1.75 for the first mile and $0.25 for each additional mile. Write and solve an inequality to determine how many miles Eddie can travel if he has $15 to spend.

$1.75 + $0.25x ≤ $15; x ≤ 53 miles

$1.75 + $0.25x ≥ $15; x ≥ 53 miles

$0.25 + $1.75x ≤ $15; x ≤ 8 miles

$0.25 + $1.75x ≥ $15; x ≥ 8 miles

Answer 12

with this one i thought it was D.. would i change it to c due to changing the sign around?

Answer 13

yes dear..

Answer 14

Evelyn has $524.96 in her checking account. She must maintain a $500 balance to avoid a fee. She wrote a check for $32.50 today. Write and solve an inequality to solve for the least amount of money she needs to deposit to avoid a fee.

524.96 − 32.50 + x ≥ 500; x ≥ $7.54

524.96 − 32.50 + x ≤ 500; x ≤ $7.54

524.96 + 32.50 − x ≥ 500; x ≥ $57.46

524.96 + 32.50 − x ≤ 500; x ≤ $57.46
this one to huh? it would be B instead of A?

Answer 15

@divu.mkr