I’ll mark brainlist i need help

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

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 the fraction 9/50 as a decimal if needed round to the nearest hundredth