6.3 - 9.5 wroten as a fraction in simplest form

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

Data are collected to see how many ice-cream cones are sold at a ballpark in a week. day 1 is sunday and day 7 is the following saturday. use the data from the table to create a scatter plot.

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how