Can you solve the chart?

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

Yvaries directly as x. y =90 when x=6. find y when x=13

Graph the line y=4/3 x+1 . use the line tool and select two points on the line.