X1 3 4 7
y5 15 20 35

C. Direct Variation; y = 5x

Step-by-step explanation:

As we can see on the table, when x is 1, y is 5. When x is 3, y is 15. When x is 4, y is 20. When x is 7, y is 35. In all of these instances, y is 5 times greater than x (1x5 is 5, 3x5 is 15, 4x5 is 20, and 7x5 is 35). That means y is equal to 5 times the quantity of x, or, y = 5x.

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