Shastri works for a local shop. A customer gives her a $50 note to pay for:  500 grams of tomatoes — at $3 a kilogram
 100 grams of mushrooms — at $7 a kilogram
 250 grams of strawberries — at $10 a kilogram
What is the correct change that Shastri should give back to the customer?

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1

answer: there are 453.592 grams in a pound.

answer: 140

step-by-step explanation:

so just add all then it will be your answer but i am not pretty sur eif it is but hope this i am here to people