Tutor profile: Briana J.

Solve this problem: 4 x 2 - 3= ?

The first step in answering this problem would be to follow the order or PEMDAS, in which multiplication comes first. Because 4 x 2 is 8, the problem would now look like this: 8 - 3=? From here, you can do simple subtraction to get the answer of 5.

What is the difference between an incipient and carious lesion?

An incipient lesion, which can be seen on an x-ray, is one that goes into the first layer of a tooth, or the enamel. At this stage, no fillings or restorative work is necessary. With improved home care and excess fluoride exposure, these fillings can stay stagnant and/or repair themselves. A carious lesion is one that extends into the second or third layer of the tooth, in which a filling or more extensive restorative work is needed to repair it.

Solve 4x + 8=16

First, subtract 8 from 16. Then, you get 4x=8. From here, you will divide 4 into 8, in order to get x by itself. x=2.