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GalinKa [24]
3 years ago
13

There is 1in. of water in a pool. The water level is increasing at 0.75in./min. Which linear equation represents the total depth

of the water, in inches, after x minutes?
A. 1 + y = 0.75x

B. y = 0.75x + 1

C. y = 0.75x

D. x = 0.75y

PLEASE HELP A GURL OUT!
Mathematics
2 answers:
mixas84 [53]3 years ago
8 0

Answer:

b i believe

Step-by-step explanation:

because you would multiply the speed over time the add what you started with

Oxana [17]3 years ago
7 0

Answer:

B

Step-by-step explanation:

recall the general form of a linear equation is

y = mx + b

where m is the slope (or rate of change) and b is the y-intercept (or the initial value of y when x = 0)

let y = water level and x = time elapsed

In this case, we are given that the rate of change is 0.75 in/min, given that the water level is RISING and the equation describes the INCREASING of water depth, hence the sign the rate is a positive (increasing) rate.

hence m = +0.75 in/min

also given that the initial level is 1 inch, hence b = 1 inch

substituting these values into the general equation:

y = 0.75x + 1  (answer B)

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