At a dinner, the meal cost $22 and a sales tax of $1.87 was added to the bill

1 - how much would the sales tax be on a $66 meal?

2 - what is the tax rate for the meals in this city?

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Could somebody me with this radical simplification?

Aline passes through (1,-5) and(-3,7) write an equation for the line in point slope form rewrite the equation in slope intercept form

A) find the derivative of the inverse to f(x) = 3x + sint at x 6. b) (cale) find the derivative of the inverse to f(x)+3sin at x 6. if x +2y -34, ind he behaviar of the cure at 4,.3), c) a. increasing, concave up d. decreasing, concave down b. increasing, concave down e. decreasing, inflection point c. decreasing, concave up