Please help me no links plesase its my last question

FIND M< S

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

Plz hurry evaluate the expression a+b where a=8 and b=19