A pet store employee added water to a fish tank. The function \( W(t)=4+2 t \) represents the amount of water, in gallons, that the tank contained after \( t \) minutes. Complete the sentence. There were \( \square \) gallons of water in the tank before the employee started filling it, and he added water at a rate of \( \square \) gallons per minute.

Question 7 ( 4 points) The force exerted by the wind on a plane surface varies jointly with the square of the velocity of the wind and with the area of the plane surface. If the area of the surface is 39 square feet surface and the wind velocity is 15 miles per hour, the resulting force is 16 pounds. Find the force on a surface of 69 square feet with a velocity of 33 miles per hour. (round off your answer to 2 decimal places) Your Answer: Answer

Write the expression as a single logarithm. \( 5 \log _{5}(7 y+1)+\frac{1}{2} \log _{5}(y+3) \) \( \log _{\square}(\square) \)

Answer Question 7 (4 points) Saved The force exerted by the wind on a plane surface varies jointly with the square of the velocity of the wind and with the area of the plane surface. If the area of the surface is 39 square feet surface and the wind velocity is 15 miles per hour, the resulting force is 16 pounds. Find the force on a surface of 69 square feet with a velocity of 33 miles per hour. (round off your answer to 2 decimal places) Your Answer: 137.65

Write the expression as a single logarithm. \[ 2\left(\log _{2} w-4 \log _{2} z\right)+2 \log _{2} y \] \( \log _{\square}(\square) \)

Write the expression as a single logarithm. \[ \frac{1}{3} \log _{b} x+5 \log _{b} z-\log _{b} y \] \( \log _{\square}(\mathbb{)} \)