Answer:
To work out the multiplier, first add or subtract the percentage from 100, then convert to a decimal. Example: we want to add 20% to £110. To work out the multiplier, add 20 to 100, to get 120, and then change it to a decimal (divide by 100) to get 1.2.
meiabatten191 helped me out on this question too.
Answer:
don't ask for an explanation. your answer is below.
Step-by-step explanation:

There are two variables here, which are time (minutes) and the number of beats, and they both have a relationship (68 beats in one minute), therefore it is an example of a unit rate
Answer:
y=5x-4
slope (m)=5
Explanation:
y=mx+b
m is the slope
b is the y-intercept
since the 5 is in the m, the slope would be 5.