Mr. johnson sells erasers for $3 each. he sold 96 erasers last week and he sold 204 erasers this week. about how much more money did he make this week?

$324

Step-by-step explanation:

In order to calculate how much more money he did, first we need to calculate the earning of each week. Then, subtract the this week's earning from last week's earning.

Last week's earning: 96 * 3 = 288

This week's earning: 204 * 612

The difference is → 612 - 288 = 324

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google