On.
rder ( 3x2 - 8x + 7) + ( 8x2 + 9x - 16 )
Write answers in descending order

3x²-8x+7+8x²+9x-16

11x²+x-8

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. : )

understand that i don't know the answers

will someone answer his question