Earls mom tells him to spend at least 15 minutes reading each night. Write an inequality to represent earls reading. A: b > 15 B: b > 15 - C: b < 15 - D: b < 15

b ≥ 15

Step-by-step explanation:

At least means we have to use the sign notation of greater than equal to (≥).

If Earls mom tells him to spend at least 15 minutes reading each night and  Earls reading is represented by b,

Inequality that represents Earl's reading will be,

b ≥ 15

x = 21

Step-by-step explanation:

3x - 23 = 40

Collect like terms

3x = 40 + 23

3x = 63

Divide through by 3

3x/3 = 63/3

x = 21

Check

3x - 23 = 40

since x = 21

3(21) - 23 = 40

63 - 23 = 40

40 = 40