Given the system of equations:
2x + 2y = 16
6x + 4y = 38
what is the value of x?
a. 13
b. -1
c. 3
d. 1/3

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

Rena is building a 1: 180 scale model of a real castle. her model has a rectangular base that is 3 feet wide and 4 feet long what is the area of the base of the actual castle in square feet

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.