A$40.00 skateboard is discounted 30%. if sales tax is 5%, what is the amount of tax paid?
$0.20
$0.40
$1.40
$2.00

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

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Ineed me i stuck and i don’t want to get it wrong