The sale price of every item in a store is 85% of its usual price. A. The usual price of a backpack is $30, what is its sale price?
B. The usual price of a sweatshirt is $18, what is its sale price?
C. The usual price of a soccer ball is $24.80, what is its sale price?
pls help its due tomorrow

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

What is the equation of a line passing through (-6,5) and having a slope of 1/3

The anwser cause i do not understand just plez