If angle ABC is complementary to angle BCA and angle ABC=4x while angle BCA=11x, first find and then find the measures of each angle.

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

If 25% of y is 30, what is 60% of y?