Jeremy is solving this system of equations algebraically. Which equation could be a step in his work? y = 3x + 1
4x - 3y = -13
4x - 3(x) = -13
o
4x - 3(x + 1) = -13
o
4x - (3x + 1) = -13
4x - 3(3x + 1) = -12

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%.

Me find the value of x each figure.

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints