PLEASE HELP MEEE 1. find the amount of tax and the total cost of a $70 object taxed at 15%

2. Joe borrowed $2,000 from the bank at a rate of 7% simple interest per year . How much interest did he pay in 5 years ? what is the total amount he has to pay back ?

3. teresa's restaurant bill comes to $30 before tax. If the sales tax is 6.25% and she tips the waiter 20%, what is the total cost of the meal ?

Reflect the point (7,0) across the y-axis

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

The constitution gives congress the power to create federal courts lower than the supreme court higher than the supreme court equal to the supreme court, unaffected by the supreme court.