1. when preparing a sanitizing solution, you must: a. test the solution strength with your finger b. test the solution strength with a digital thermometer c. test the solution strength with a metal stem thermometer d. test the solution strength with test strips

The correct answer would be D, Test the solution strength with the test strips.

Explanation:

Sanitizer is a solution which is used to kill germs, bacteria, fungi, viruses, etc. With the use of sanitizers, the infectious agents present on the hands, face, or any part of the body are killed or almost 99.9% removed from that part of the body. When this solution is made, it is first tested in the laboratories. There are test strips that are dipped in the solution and the strength of the solution is tested in this way. These strips are used to find out the strength of the solution formed. So option D is the appropriate one.

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"we first find value of tax in dollars.

the difference between the two prices   is: 23. 54 - 22 = 1.54

therefore the sales tax in dollars is 1.54

the tax % will be   (amount of tax / original cost price ) × 100

(1.54 / 22) × 100  → (0.07) × 100 =   7

so the tax rate is 7%

we can double check the answer.

7 % of 22   → (7/100) × 22 → 0.07 × 22 = 1.54

22 + 1.54 = 23.54"