Can someone help? On a map, 90 miles represented by 3 inches.

A measure of 1/2 inch on the map would represent ___ miles.

The power generated by an electrical circuit (in watts) as a function of its current c (in amperes) is modeled by p(c)= -15c(c-8) what current will produce the maximum power?

Consider u = {x|x is a negative real number}which is an empty set? o {x|x eu and x has a negative cube root}o {x|x eu and x has a negative square root}{x|x eu and x is equal to the product of a positive number and -1}{x|x eu and x is equal to the sum of one negative and one positive number?

At the play,8 students from mr.franks room got a seat.if there were 17 childern from room 24,how many childern did not get a seat ?