Solve for \( y \): \( 4y - 3(2y + 1) = 5 \).
If \( f(x) = 2x^2 - 3x + 1 \), find \( f(-1) \).
Expand the expression \( (2x - 3)(x + 4) \).
If \( x^2 - 5x + 6 = 0 \), what are the possible values of \( x \)?
What is the area of a trapezoid with bases of lengths 6 cm and 10 cm, and a height of 5 cm?
What is the volume of a cone with a radius of 3 cm and a height of 4 cm? (Use \( \pi \approx 3.14 \))
Find the length of the diagonal of a rectangle with length 8 cm and width 6 cm.
What is the surface area of a sphere with a radius of 5 cm? (Use \( \pi \approx 3.14 \))
A dataset contains the numbers 5, 7, 9, 11, 13, and 15. What is the standard deviation?
A survey of 300 people found that 180 like coffee, 120 like tea, and 90 like both. How many people like only coffee?
What is the range of the dataset \(\{5, 8, 12, 20, 25\}\)?
A company's revenue increased from \( \$\)200,000 in 2019 to \(\$\)250,000 in 2020. What is the percentage increase?