Please help answer any and all that you can, I don’t understand this stuff very well. Help is much appreciated! For #3 specific operations I only need the first part not the graphs.

Let's start with one. This is a sin graph because at x = 0, the sinusoid isn't at a peak or trough(the tops and bottoms of the wave).

The equation becomes 0.5 sin(x) + 1.

The 0.5 comes from fact that the wave goes 0.5 above the middle and 0.5 below. the + 1 comes from the fact that the middle is at y = 1.

Second one now. A little harder to explain, but you can look up some stuff on probability and combinations to understand this better. This kind of question can be answered with a simple formula though:

Where k is number of times any letter that repeats. For example, E repeats 3 times, so you'd have 3!. You have to do this for each letter. n is the number of letters. Thus with no restrictions:

= 108972864000 ways!

Might have miscounted, but I don't see any repeating letters other than E and N.

For part b of 2, try to divide up the problem into cases, so you can see where all the vowels are together.

I'll let someone else take over as I'm goona sleep now lol.

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation:

a

step-by-step explanation: