On a math test, Janice answers 85% of the questions correctly. If she answered 17 questions correctly, how many questions are on the test? Please help me

Write an algebraic expression for the word expression the quotient of c and 8

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a.the profit when the unit price is equal to 0b.the unit price(s) when the profit is equal to 0c.the profit when the unit price is greatestd.the unit price(s) when profit is greatest

With alll of except for the 2 that i did already