A teenager who is 5 feet tall throws an object into the air. The quadratic function f(x)= -16x^2+64x+5 is where f(x) is the height of the object in feet and x is the time in seconds

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'