Isabella's shopping for back to school clothes she bought three skirts, two pairs of jeans, and four sweaters. Wight and evaluate an expression to find how much she spent not including sales tax.

skirt - 35.99

jeans - 49.99

sweater-32.99

Number of items bought by Isabella:

Number of skirts = Ns = 3

Pairs of jeans = Nj = 2

Number of sweaters = Nsw = 4

Price of a skirt = Ps = 35.99

Price of a pair of jeans = Pj = 49.99

Price of a sweater = Psw = 32.99

Expression to calculate how much Isabella spent = (Ns * Ps) + (Nj * Pj) + (Nsw * Psw)

Evaluating the expression by substituting with respective values:

Total Money Spent by Isabella = (3 * 35.99) + (2 * 49.99) + (4 * 32.99)

⇒ Total Money Spent by Isabella = 107.07 + 99.98 + 131.96

⇒ Total Money Spent by Isabella = 339.01