10 - 3x - 13 + 5x
= 10 - 13 + 5x - 3x
= - 3 + 2x
= 2x - 3
Answer:
$23.952, since money is always rounded up $23.96
Step-by-step explanation:
the first step is to get the total value of her purchases, thus we add 16.99 + 12.95 to get 29.94
since she will receive a 20% discount that means that she will be paying 80% of the total value
next we set up the ratio as follows:
portion paid / total = x/29.94 = 80/100
solving the ratio gives you 23.952
sum = x(n+1)/2
where x is the number of the term ( in this case 52)
n is the last number in the series( which is not given in the problem)
$5 → 1/3 pound
$1 → 1/3 ÷ 5 = 1/3 x 1/5 = 1/15 pound
$9 → 1/15 pound x 9 = 9/15 pound = 3/5 pound
