Question

use the drop-down menus to explain how ken can use the model to find the total weight of the baseballs. click the arrows to choose an answer from each menu. to represent the weight of one baseball, 0.3 pound, ken should shade 3 columns. to represent the weight of all of the baseballs, he should shade this amount 3 times. the shaded part of the model will represent the expression choose. the total weight of the baseballs is choose... pounds. 7 + 3 7 + 0 7 × 3

Explanation:

Step1: Analyze the problem

We need to find the total weight of baseballs where each baseball weighs 0.3 pounds. Let's assume there are 7 baseballs (from the context of the options). So we need to find the expression for total weight and then the total weight.

Step2: Determine the correct expression

If each baseball is 0.3 pounds and there are 7 baseballs, the total weight is calculated by multiplying the number of baseballs (7) by the weight of each (0.3). Wait, but looking at the options, maybe there are 7 baseballs? Wait, the first part: "To represent the weight of one baseball, 0.3 pound, Ken should shade 3 columns (assuming a decimal model, 0.3 is 3 tenths). To represent the weight of all of the baseballs, if there are 7 baseballs, the expression should be \(7 \times 0.3\) (but looking at the options, one of the options is \(7 \times 0.3\) maybe? Wait, the visible options: "7 + 3", "7 + 0.3", "7 × 3", "7 × 0.3". Wait, maybe the weight per baseball is 0.3, and number of baseballs is 7. So total weight is \(7 \times 0.3\). Let's check the options. So the correct expression is \(7 \times 0.3\).

Step3: Calculate the total weight

Now, calculate \(7 \times 0.3\). \(7 \times 0.3 = 2.1\) pounds. Wait, but let's confirm. If each is 0.3, 7 of them: \(7 \times 0.3 = 2.1\).

Answer:

For the expression: \(7 \times 0.3\) (assuming the number of baseballs is 7 and each is 0.3 pounds). The total weight is 2.1 pounds. But based on the options, the expression should be \(7 \times 0.3\) (if that's an option) and the total weight is 2.1. But let's check the options again. Wait, the visible options for the expression: "7 + 3", "7 + 0.3", "7 × 3", "7 × 0.3". So the correct expression is \(7 \times 0.3\) (since we multiply the number of baseballs by the weight per baseball). Then the total weight is \(7 \times 0.3 = 2.1\) pounds.