Solve the system of equations by using substitution.
y = 2x – 3
y = x+4

15 points! write the slope-intercept form of the equation of the line through the given point with the given slope. use y-y = m(x-x) to solve. through (2,5) slope= undefined

The weekly revenue for a company is r = 3p^2 + 60p + 1060, where p is the price of the company's product. what price will result in a revenue of $1200.

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?