ASAP
17. What is the greatest solution of x in the equation x2 + 8x - 30 = 18?

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

What is the volume of the cone to the nearest cubic millimeter? (use π  = 3.14) a) 46 mm3 b) 128 mm3 c) 183 mm3 d) 275 mm3 diameter = 5 mm height = 7 mm how do you do this problem step by step?

Having a hard time understanding this question (see attachment).