Solve the Problem $t$ Seconds Is Given By $h = - 9.8 \mathrm { t } ^ { 2 } + 78.4 \mathrm { t }$

question 145

Multiple Choice

Solve the problem.
-If a rocket is propelled upward from ground level, its height in meters after $t$ seconds is given by $h = - 9.8 \mathrm { t } ^ { 2 } + 78.4 \mathrm { t }$ . During what interval of time will the rocket be higher than $147 \mathrm {~m}$ ?

• A) \(6 < t < 8\)
• B) \(5 < t < 6\)
• C) \(0 < t < 3\)
• D) \(3 < t < 5\)

---

Definitions:

Cnidarians

A phylum of aquatic invertebrates that includes jellyfish, corals, and sea anemones, characterized by a simple body plan with a single opening and cnidocytes for capturing prey.

Hydras

Freshwater organisms belonging to the phylum Cnidaria, known for their simple tubular body and radial symmetry.

Complete Digestive System

A digestive system that has two separate openings for ingestion and egestion, allowing for a one-way flow of food and efficient digestion.

Flatworms

A group of invertebrates belonging to the phylum Platyhelminthes, characterized by their flattened bodies, bilateral symmetry, and lack of body cavity.