Y is the hourly wage I must pay, and x is the # lifeguards I want to hire
y = 10 - ½ x

x = 20

Step-by-step explanation:

substitute y= 0 first and multuply both sides move the variable to the left.

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

answer: i believe the answer is e

step-by-step explanation: