NEED HELP ASAP! This question has two parts.

First, answer Part A. Then, answer Part B. Part A Select the correct choices to complete the sentence. Use the expression 7^3·7^2 to complete true statements. The powers in the factors both have a base of 7. The first power has an exponent of 3, and the second power has an exponent of 2 .

Part B Simplify the expression using a single exponent.

the sum of the lengths of any two sides of a triangle is greater than the length of the third side. if you take the three sides of a triangle and add them in pairs, the sum is greater than (not equal to) the third side. if that is not true, then it is not possible to construct a triangle with the given side lengths.

step-by-step explanation:

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did u ever get the answers? i need