The results of a survey in the cafeteria show that 20% of students like ketchup, 50% like mustard, and 15% like both ketchup and mustard. What is the probability that a student likes neither ketchup nor mustard? A) 25% B) 45% C) 75% D) 85%

Can someone me with my math problem pls my teacher is on my back about this

Find the length of the radius of a circle with the center at -7+2i and a point in the circle at 33+11i

The table below shows the approximate masses of a dust particle and a grain of pollen. dust particle 0.000000778 g grain of pollen 0.00000000155 g the mass of a dust particle can be estimated and written in the form a × 10^b, where a = 8 and b = the mass of a grain of pollen can be estimated and written in the form a × 10^b, where a = 2 and b = based on the estimates, the mass of a dust particle is approximately blank times larger than the mass of a grain of pollen.