Question

Your school district cancels schools when more than 2.5 inches of snow accumulate on the ground each hour. Snow is currently accumulating at the rate if 11/5 inches per hour. Then solve the inequality

Answer 1

11/5 in/hr

s = snow height (in)

t = time (hrs)

s = ¹¹/₅.t

2.5 = ⁵/₂

School closes when s > 2.5 or s > ⁵/₂

⁵/₂ = ¹¹/₅.t

⁵/₂ ÷ ¹¹/₅ = t

t = ⁵/₂.⁵/₁₁

= ²⁵/₂₂

School closes if t > ²⁵/₂₂