You water the plants in your classroom at a constant rate. after 5 seconds, your watering can contains 58 ounces of water. fifteen seconds later, the can contains 28 ounces of water.

a. write an equation in slope-intercept form that represents the amount yy (in ounces) of water in the can after xx seconds.

y = -3x + 142

Step-by-step explanation:

We can write the information given to us as ordered pairs, where x represents the number of seconds and y represents the amount of water in the can:

(5, 58) and (15, 28)

To write an equation in slope-intercept form, first we find the slope.  The formula for slope is:

Using our points, we have

We use point-slope form to write the initial equation:

Using our first point as (x₁, y₁), we have:

y-58 = -3(x-28)

Using the distributive property, we have

y-58 = -3(x)- -3(28)

y-58 = -3x+84

Adding 58 to each side, we have

y-58 + 58 = -3x+84+58

y = -3x + 142

what is the original number? you forgot to add it.

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet