The half life of a substance is 30 days. If there are 4.5 grams to start with, how much will be left after 23 days? Round to the nearest tenth of a gram. Be sure to label your answer.

Find the y-intercept of the following equation. simplify your answer. y = 5 x + 7 9 y-intercept =

Maximum or minimum value of f(x) = x2 + 4 x - 7

The prism-shaped roof has equilateral triangular bases. create an equation that models the height of one of the roof's triangular bases in terms of its sides. in your final answer, include all necessary calculations.