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

Question

4 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] · Answer 1 · 2021-12-27T23:44:56+03:00

mixas84 [53]4 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] · Answer 2 · 2021-12-28T00:47:02+03:00

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)