Miguel spends $35 a day for 4 days. he earns $21 a day for 5 days. does miguel end up with more or less money than he started with? by how much?

a. miguel ends up with $35 more than he started with.
b. miguel ends up with $35 less than he started with.
c. miguel ends up with $91 more than he started with.
d. miguel ends up with $91 less than he started with.

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

Which point is a solution to y s 4x + 5?

Is this a polynomial function? i need to know asap