Which function is differentiable for all values of x over the interval (-5,5)?

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?