The amount of sales tax on a purchase varies directly as the price of the item varies. if a computer costs $400 before tax and the tax is $30 tax, which of the following equations is a correct step in solving for how much tax is needed for a computer that costs $500?

Simplify the expression. enter the correct answer.

Meghan has created a diagram of her city with her house, school, store, and gym identified. a. how far is it from the gym to the store? b. meghan also wants to walk to get some exercise, rather than going to the gym. she decides to walk along arc ab. how far will she walk? round to 3 decimal places.

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)