Ron paid $799.99 per laptop for three laptops and a flat rate fee for antivirus installation for a total bill of $2,529.57 at gigahertz computers. jerry paid $777.16 per laptop for three laptops plus a per laptop antivirus installation fee for a total bill of $2,481.42 at techzone computers. what is the difference in the amounts they paid for the antivirus installation charges?

Ron

799.99*3=2399.97

2529.57 - 2399.97 =129.60 for antivirus

Jerry

777.16*3 = 2331.48

2481.42 - 2331.48 = 150.24

150.24 for antivirus

150.24 - 129.60 =20.64

Jerry paid 20.64 more

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)