The receipt shows the prices of goods that Robert bought at the store.
The state Robert lives in has a sales tax rate of 8% on all purchases.
How much money does Robert pay in sales tax and what is the total amount he must
pay for his purchases?

Find the gradient of f(x,y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.