TSI Math Review

Front

If y varies directly as x, and x = 3 when y = 24, find y when x = 10.

Back

y = 80

Front

If the $3.80 large popcorn was on sale for 25% off, what is the discounted price?

Back

The discounted price is $2.85.

Front

Simplify the following expression (3x^2y^3)^3.

Back

The simplified expression is 27x^6y^9.

Front

If y varies inversely as x, and y = 4.5 when x = 10, find x when y = 5.

Back

x = 9.

Front

The area of a rectangle is 45 and its perimeter is 28. What is the length of the longer side of the rectangle?

Back

The longer side is 9.

Front

What is direct variation?

Back

Direct variation is a relationship between two variables where one variable is a constant multiple of the other.

Front

What is inverse variation?

Back

Inverse variation is a relationship where the product of two variables is constant.

Front

How do you calculate the area of a rectangle?

Back

Area = length × width.

Front

How do you calculate the perimeter of a rectangle?

Back

Perimeter = 2(length + width).

Front

What is the formula for simplifying powers of a product?

Back

(ab)^n = a^n * b^n.