Factor this trinomial. x² + 3x-4
O A. (x – 4)(x - 1)
O B. (x+4)(x + 1)
O C. (x - 4)(x+1)
O D. (x + 4)(x - 1)

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

Find the area of an equilateral triangle with a side of 6 inches

Tessa bought stock in a restaurant for $253.00. her stock is now worth $333.96. what is the percentage increase of the value of tessa's stock? a.) 81% b.) 32% c.) 24% d.) 76%