4 Which of the following expressions is
equivalent to x2 + 2x – 15 ?
A (x + 2)(x – 7.5)
C (x – 3)(x + 5)
B (x + 3)(x - 5)
D none of these

(x-3)(x+5)

Step-by-step explanation:

(x-3)(x+5)

x^2 - 3x + 5x - 15

x^2 + 2x - 15

(x-3)(x+5)

Step-by-step explanation:

I put the expression onto a graphing calculator, then I put all of the answers onto the calculator and it was equal to the original expression. Hope this helps.

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )