3-20. Rewrite each expression below without negative or zero exponents. 4−1 70 5−2 x−2 3-21. Simplify and solve each equation below for Record your work. x. 3x = 2 − 7 1 + 2x = + x x x − −5 3 2x = 2x 5 − − 3 + 2x (x + 1) 3x 6 = − − 3-22. For the line graphed at right: (Desmos) Determine the slope. Find the equation of the line. 3-23. Write and solve an equation to represent the given situation. Be sure to define your variable. Samantha currently has $1500 in the bank and is spending $35 per week. How many weeks will it take until her account is worth only $915?
3-20. Rewrite each expression below without negative or zero exponents. 4−1 70 5−2 x−2 3-21. Simplify and solve each equation below for x. Record your work. 3x − 7 = 2 1 + 2x − x = x −5 + x 3 − 2x = 2x − 5 3 + 2x − (x + 1) = 3x − 6 3-22. For the line graphed at right: (Desmos) Determine the slope. Find the equation of the line. 3-23. Write and solve an equation to represent the given situation. Be sure to define your variable. Samantha currently has $1500 in the bank and is spending $35 per week. How many weeks will it take until her account is worth only $915?
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