Each car is traveling at a constant speed. Find the number of miles each car travels in 1 hour at the given rate. 22 miles in 1/2 hours

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.

What ia the sum if the first 7 terms of the geometric series