A scuba diver is hired to take underwater photos. He begins swimming straight downward from an elevation
of -5 meters relative to sea level. His elevation changes
at a constant rate of 2.5 meters per minute. When he
stops, his camera is still in a safe depth for use.
For how many minutes could he have been swimming?
Graph the solution set. Show your work.

you cant answer this dummy

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value