Simplify each expression. Justify each step.

4 (x + 9) + 5x

Solve the following trigonometric equations for all values of x | 0 < x < 360o. (12.5 pt. ea.) 1. 4 cos2 x = 3 2. 3 tan x = tan x - 2 Solve the equations for all values of θ | 0o < θ < 360o (12.5 pt. ea.) 3. 4 cos θ = - 4 4.

Does anyone know 2x=8y=7 4x-2y=9

If 3/10 was spent warming up and cooling down how many minutes was it

The all you can eat buffet is $8 per person. How many people can eat for $48? write an equation to solve for the number of people who ate.

Marissa earns $38 per hour for the first 40 hours she works in a week. For every hour after the first 40 hours that she works in a week, she earns one and a half times her regular hourly rate.

The coffee shop is having a special where 2 pounds of coffee costs $4. Assume that the total cost in dollars "y" varies directly with the number of pounds of coffee "x". This can be represented by y=2x. How much will 2.5 pounds of coffee costs?

A box of a dozen fruit tarts costs$15.00. What is the cost of one fruit tart

The pet shop owner told Jean to fill her new fish tank 3/4 full with water jean filled it 9/12 full. what fraction of the tank does jean still need to fill

A milk bottle has radius 7cm and milk is filled upto a height of 28cm. A portion of milk is used to make tea and the height goes down to 20cm. How much milk is left out in the bottle in cu ... cm.

Use substitution to solve y=-2x+1 y=x-5