22. Compute the following algebraic sums:
a) 5 - 3 + 6 + 2 - 10 - 12:
b) -15 + 8 + 9 - 3 - 5 + 18;
c) 28 - 41 +62 + 3 - 102 - 5:
d) -1.2 + 5.8 - 6.7 - 5.9 + 2.4;
e) 7.4 - 5.8 + 8.3 -6.1 + 7.5:
f) 12.6 - 15.4 + 7-10;
g) 7.8 - 3.5 + 5.3 - 12.1 + 7.8;
h) 10.6 - 13.4 + 4 - 10:
i) 7 - 5 - 9 + 0.3 -0.08 ;
j) -24 + 11.02 - 3.014 + 0.05 -0.007.​

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

The scatterplot below shows the number of hours that students read weekly and the number of hours that they spend on chores weekly. which statement about the scatterplot is true?