A house was valued at $357,000. Over several years, the value decreased by 15%, giving the house a new value. (a) Fill in the blank to write the new value in terms of the old value. Write your answer as a decimal. New value = x Old value

(b) Use your answer in part (a) to determine the new value. New value: $​

The path traveled by a bottlenose dolphin as it jumps out of water is modeled by the equation y=-0.4+3x, where t is the height above water and x is the horizontal distance in feet. if a beam of light is shone upward at an angle modeled by the equation x+y=10, at what height from the waters surface will the beam of light hit the dolphin