What is the cost of the sweatshirt if the regular price is $42 and sales tax is 7.5%?

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

The square root of 9x plus 7 plus the square rot of 2x equall to 7

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.