4. a scuba diver was at a depth of -80 1/2
how many feet did the scuba diver travel if
the diver traveled to the surface of the
ocean?

161 feet

Step-by-step explanation:

80.5 * 2 = 161 Feet

We multiply by 2 due to them swimming down and back

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)

125 yards

step-by-step explanation:

i take 75 plus 50.