3. Let x, y,z > 0 with x²yz = 9. Find the minimum of 2.c +y +3z.

Sherina wrote and solved the equation. x-56=230 x-56-56=230-56 x=174 what was sherina’s error? sherina’s work is correct. sherina only needed to subtract 56 from 230. sherina made a subtraction error when subtracting 56 from 230. sherina should have added 56 to both sides of the equation.

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Ateacher brought a pack of 17 batteries . each calculator uses 3 batteries . how many calculator can the teacher fill with batteries