PLEASE HELP (TRIGONOMETRY) Also, there is a symbol I've literally never seen before, so if anyone knows what that is then please let me know.

The horizontal distance of a projectile is modeled by, D = , when D is the distance and (symbol shown in image) is the launch angle. What would the horizontal distance be if the launch angle is 0.9 radians?

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

An unknown number x is at most 10. which graph best represents all the values of x? number line graph with closed circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the left. number line graph with closed circle on 10 and shading to the left.