ACT Skills

Solve the system of equations using substitution: $$y=2x+3$$ and $$3x+y=8$$

Calculate the area of a circle with a radius of 5 units.

How much would you pay for a $120 pair of shoes that is 20% off?

Solve the system of equations using elimination:

$$5x + 2y = 20$$ and $$3x - 2y = 4$$

Calculate the circumference of a circle with a radius of 7 units.

A PS5 costs $450, but is on sale for 25%. After the sale, a 10% tax is added. What is the final price?

A meal at Red Lobster costs $84 for you and your friend. You decide to pay, and you add a 20% tip.

If you split the cost evenly, how much does your friend owe you?

What is the area of the blue shape?

If $$f\left(x\right)=3x-10$$ what is $$f\left(5\right)?$$

Is this a function?