Sally's age is 2 plus 3 times John's age. Together, Sally and John's age equals 30. How old is Sally?
1 answer:
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Answer:
m=5
Step-by-step explanation:
1. Convert the logarithm into exponential form using the fact that (x)=b is equal to x=
so ... 4m-10=
2. Any expression raised to the power of 1 equals itself so ... 4m-10=10
3. Move the constant to the right-hand side and change its sign so ... 4m=10+10
4. Add the numbers so ... 4m=20
5. Divide both sides of the equation by 4 so ... m=5, m>
6. Check if the solution is in the defined range so ... m=5