Question

PLEASE HELP I GIVE 100 POINTS

A scuba diver is at an elevation of −40 feet. The diver starts moving at a rate of −16 feet per minute. Write an inequality that represents how long it will take the diver to reach an elevation deeper than −310 feet.

Answer 1

Let time be t

$\\ \sf\longmapsto 40+16t\leqslant 310$

$\\ \sf\longmapsto 16t\leqslant 310-40=270$

$\\ \sf\longmapsto t\leqslant \dfrac{270}{16}$

$\\ \sf\longmapsto t\leqslant 17s$

• It will take at least 17s to go 310ft deeper