What is the cost, in dollars, of 16 onions if 3 onions weigh 1.5 lb and the price of onions is 33 cents per kilogram

The cost of 16 onions is $ 1.20.

Step-by-step explanation:

To determine what is the cost, in dollars, of 16 onions if 3 onions weigh 1.5 lb and the price of onions is 33 cents per kilogram, the following calculation must be performed:

1.5 pounds = 0.68 kilos

0.68 / 3 = 0.22666 kilos each onion

16 x 0.22666 = 3.626 kilos

0.33 x 3.626 = 1.20

Therefore, the cost of 16 onions is $ 1.20.

1. See explanation

B- (1 + 2)*3

Step-by-step explanation:

In case you need a reminder, let's go over the rules of PEMDAS. The letters are in order of what to solve first in an equation.

P: Parentheses. e.g. (2 + 1) * 3 (solve 2 + 1 first)

E: Exponents. e.g. 4^2 + 1 (solve 4^2 first)

M/D: Multiplication or division. e.g. 4/2 + 8 (solve 4/2 first; solve multiplication and division in whatever order they appear in)

A/S: Addition or subtraction. e.g. 4 - 2 + 8 (solve 4 - 2 first, then subtract that by 8)

In an equation like this:

(2 + 4)^2 - 3 * 4

First solve 2 + 4 to get 6, then find 6 squared to get 36, then multiply 3 * 4 to get 12, then subtract 12 from 36 to get 24.

Now, let's apply these rules to the given problems.

1. First, evaluate 8 - 6 because they are in parentheses. 8 - 6 = 2. Now, evaluate 2 * 2. 2 * 2 = 4.

2. The only time the first step in a problem with multiple operations is addition is when the numbers being added are in parentheses. The only option that highlights this is B: (1 + 2) * 3.