Which expression is equivalent to (+12)×5+7

Need so much on this one how many yards?

What is the maximum of the sinusoidal function

To find the inverse of a number a, one can use the equation f(c) = a-1/c=0 where c is the inverse of a use the secant method of finding roots of equations to find the inverse of a = 2.5 ,er = 0.001%