During a scuba dive, Lainey descended to a point 21 feet below the ocean surface. She continued her descent at a rate of 21 feet per minute. Enter an inequality you could solve to find the number of minutes she can continue to descend if she does not want to reach a point more than 91 feet below the ocean surface. Use t to represent the variable for the minutes Lainey can continue to descend.
2 answers
-21 - 21t > -91
oops ... ≥ -91