It will take her 8 weeks to have enough money for a bike. I made the equation 125+15x=245 and multiplied 15 by 8 to get exactly 245
Simplify means solve and to solve we first need to do 2 to the 2nd power which is two * 2 that equal 4 than do 2 to the 10th power that equal 1024 and than we can just do
4 divided by 1024 = 0.0390625
The value of x is: Solve for x by simplifying both sides of the equation, then isolating the variable.
x=−9/4
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D/dx ( cos (4x)) = - sin (4x) · d/dx ( 4x) = - 4 sin (4x)
