4. A science student put together the following formula that can calculate the height, in feet,
of a water bottle rocket by using the number of seconds after the launch, X.
f(x) = –2x2 + 11x + 15
How high will the rocket be off the ground 3 seconds after it is launched?

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?