M∠ABD = 6x-1, m∠DBC = 11x+7, and m∠ABC = 148°, find x, m∠ABD and m∠DBC.

Flashback to semester a. are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr? show your work.

Tommy buys a sweater that is on sale for 40% off the original price. the expression p -0.4p can be used to find the sale price of the sweater, where p is the original price of the sweater. if the original price of the sweater is 50, what is the sale price?

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?