Question

Solve the following inequality: -7r + -1 > -71 and 3r + 9 > 24
A)r < 5 or r > 10
B)r < -10 or r > -5
C)-10 < r < -5
D)5 < r < 10

Answer 1

r< -72/7

Answer 2

the second one is r>5

Answer 3

@jreina100 thats not one of my options.?????

Answer 4

for -72/7 I got -10.28 .????? @jreina100

Answer 5

-7r + (-1) >- 71
-7r - 1 > - 71
-7r > -71 + 1
-7r > -70
r < -70/-7 (change the sign when dividing by a negative)
r < 10

3r + 9 > 24
3r > 24 - 9
3r > 15
r > 5

so r is less then 10 and greater then 5.
5 < r < 10 <-- answer