Answer:

Step-by-step explanation:
given
45 = 25m + b ( isolate the term in m by subtracting b from both sides )
45 - b = 25m ← divide both sides by 25
= m
3-in plus 1.5-out every minute means a net gain of 1.5 per minute. You need to fill (12 - 3) = 9 gallons. At 1.5 per minute, it takes 9/1.5 = 6 minutes if the drain and the faucet arr both open, but only (9/3)=3 minutes if you close the drain while you fill the tub.
She needs to purchase a cover to protect the hot tub of an area of 38.5 square feet.
<h3>What is a circle?</h3>
It is a locus of a point drawn at an equidistant from the center. The distance from the center to the circumference is called the radius of the circle.
Claire has a hot tub with a diameter of 7 feet. She wants to purchase a cover to protect the hot tub.
The area of the circle is given by

We have d = 7 ft, then the area of the circle will be

More about the circle link is given below.
brainly.com/question/11833983
Answer:
x = 5
Step-by-step explanation:
Since the triangles are similar, corrresponding sides are in proportion.

Using the equation formed by the second and third fraction above we get

28(x + 7) = 24(3x - 1)
28x + 196 = 72x - 24
44x = 220
x = 5
B is the answer to your question I remember putting that in my other class